diff options
Diffstat (limited to 'app')
| -rw-r--r-- | app/app_base.gypi | 14 | ||||
| -rw-r--r-- | app/surface/accelerated_surface_mac.cc | 334 | ||||
| -rw-r--r-- | app/surface/accelerated_surface_mac.h | 108 | ||||
| -rw-r--r-- | app/surface/io_surface_support_mac.cc | 242 | ||||
| -rw-r--r-- | app/surface/io_surface_support_mac.h | 66 | ||||
| -rw-r--r-- | app/surface/transport_dib.h | 156 | ||||
| -rw-r--r-- | app/surface/transport_dib_linux.cc | 113 | ||||
| -rw-r--r-- | app/surface/transport_dib_mac.cc | 77 | ||||
| -rw-r--r-- | app/surface/transport_dib_win.cc | 81 | ||||
| -rw-r--r-- | app/x11_util.cc | 751 | ||||
| -rw-r--r-- | app/x11_util.h | 173 | ||||
| -rw-r--r-- | app/x11_util_internal.h | 35 |
12 files changed, 2150 insertions, 0 deletions
diff --git a/app/app_base.gypi b/app/app_base.gypi index b417256..0f6f363 100644 --- a/app/app_base.gypi +++ b/app/app_base.gypi @@ -50,6 +50,9 @@ 'gtk_signal.h', 'gtk_util.cc', 'gtk_util.h', + 'x11_util.cc', + 'x11_util.h', + 'x11_util_internal.h', ], }], ], @@ -163,6 +166,14 @@ 'sql/statement.h', 'sql/transaction.cc', 'sql/transaction.h', + 'surface/accelerated_surface_mac.cc', + 'surface/accelerated_surface_mac.h', + 'surface/io_surface_support_mac.cc', + 'surface/io_surface_support_mac.h', + 'surface/transport_dib.h', + 'surface/transport_dib_linux.cc', + 'surface/transport_dib_mac.cc', + 'surface/transport_dib_win.cc', 'table_model.cc', 'table_model.h', 'table_model_observer.h', @@ -172,6 +183,9 @@ 'theme_provider.h', 'throb_animation.cc', 'throb_animation.h', + 'x11_util.cc', + 'x11_util.h', + 'x11_util_internal.h', ], 'conditions': [ ['OS=="linux" or OS=="freebsd" or OS=="openbsd"', { diff --git a/app/surface/accelerated_surface_mac.cc b/app/surface/accelerated_surface_mac.cc new file mode 100644 index 0000000..f50d528 --- /dev/null +++ b/app/surface/accelerated_surface_mac.cc @@ -0,0 +1,334 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "app/surface/accelerated_surface_mac.h" + +#include "app/surface/io_surface_support_mac.h" +#include "base/logging.h" +#include "gfx/rect.h" + +AcceleratedSurface::AcceleratedSurface() + : gl_context_(NULL), + pbuffer_(NULL), + surface_width_(0), + surface_height_(0), + texture_(0), + fbo_(0), + depth_stencil_renderbuffer_(0), + bound_fbo_(0), + bound_renderbuffer_(0) { +} + +bool AcceleratedSurface::Initialize() { + // Create a 1x1 pbuffer and associated context to bootstrap things + static const CGLPixelFormatAttribute attribs[] = { + (CGLPixelFormatAttribute) kCGLPFAPBuffer, + (CGLPixelFormatAttribute) 0 + }; + CGLPixelFormatObj pixel_format; + GLint num_pixel_formats; + if (CGLChoosePixelFormat(attribs, + &pixel_format, + &num_pixel_formats) != kCGLNoError) { + DLOG(ERROR) << "Error choosing pixel format."; + return false; + } + if (!pixel_format) { + return false; + } + CGLContextObj context; + CGLError res = CGLCreateContext(pixel_format, 0, &context); + CGLDestroyPixelFormat(pixel_format); + if (res != kCGLNoError) { + DLOG(ERROR) << "Error creating context."; + return false; + } + CGLPBufferObj pbuffer; + if (CGLCreatePBuffer(1, 1, + GL_TEXTURE_2D, GL_RGBA, + 0, &pbuffer) != kCGLNoError) { + CGLDestroyContext(context); + DLOG(ERROR) << "Error creating pbuffer."; + return false; + } + if (CGLSetPBuffer(context, pbuffer, 0, 0, 0) != kCGLNoError) { + CGLDestroyContext(context); + CGLDestroyPBuffer(pbuffer); + DLOG(ERROR) << "Error attaching pbuffer to context."; + return false; + } + gl_context_ = context; + pbuffer_ = pbuffer; + // Now we're ready to handle SetWindowSize calls, which will + // allocate and/or reallocate the IOSurface and associated offscreen + // OpenGL structures for rendering. + return true; +} + +void AcceleratedSurface::Destroy() { + // Release the old TransportDIB in the browser. + if (dib_free_callback_.get() && transport_dib_.get()) { + dib_free_callback_->Run(transport_dib_->id()); + } + transport_dib_.reset(); + if (gl_context_) + CGLDestroyContext(gl_context_); + if (pbuffer_) + CGLDestroyPBuffer(pbuffer_); +} + +// Call after making changes to the surface which require a visual update. +// Makes the rendering show up in other processes. +void AcceleratedSurface::SwapBuffers() { + if (bound_fbo_ != fbo_) { + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); + } + if (io_surface_.get() != NULL) { + // Bind and unbind the framebuffer to make changes to the + // IOSurface show up in the other process. + glFlush(); + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); + } else if (transport_dib_.get() != NULL) { + // Pre-Mac OS X 10.6, fetch the rendered image from the FBO and copy it + // into the TransportDIB. + // TODO(dspringer): There are a couple of options that can speed this up. + // First is to use async reads into a PBO, second is to use SPI that + // allows many tasks to access the same CGSSurface. + void* pixel_memory = transport_dib_->memory(); + if (pixel_memory) { + // Note that glReadPixels does an implicit glFlush(). + glReadBuffer(GL_COLOR_ATTACHMENT0_EXT); + glReadPixels(0, + 0, + surface_width_, + surface_height_, + GL_BGRA, // This pixel format should have no conversion. + GL_UNSIGNED_INT_8_8_8_8_REV, + pixel_memory); + } + } + if (bound_fbo_ != fbo_) { + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_); + } +} + +static void AddBooleanValue(CFMutableDictionaryRef dictionary, + const CFStringRef key, + bool value) { + CFDictionaryAddValue(dictionary, key, + (value ? kCFBooleanTrue : kCFBooleanFalse)); +} + +static void AddIntegerValue(CFMutableDictionaryRef dictionary, + const CFStringRef key, + int32 value) { + CFNumberRef number = CFNumberCreate(NULL, kCFNumberSInt32Type, &value); + CFDictionaryAddValue(dictionary, key, number); +} + +void AcceleratedSurface::AllocateRenderBuffers(GLenum target, + int32 width, int32 height) { + if (!texture_) { + // Generate the texture object. + glGenTextures(1, &texture_); + glBindTexture(target, texture_); + glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + // Generate and bind the framebuffer object. + glGenFramebuffersEXT(1, &fbo_); + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); + bound_fbo_ = fbo_; + // Generate (but don't bind) the depth buffer -- we don't need + // this bound in order to do offscreen rendering. + glGenRenderbuffersEXT(1, &depth_stencil_renderbuffer_); + } + + // Reallocate the depth buffer. + glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depth_stencil_renderbuffer_); + glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, + GL_DEPTH24_STENCIL8_EXT, + width, + height); + + // Unbind the renderbuffers. + glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, bound_renderbuffer_); + + // Make sure that subsequent set-up code affects the render texture. + glBindTexture(target, texture_); +} + +bool AcceleratedSurface::SetupFrameBufferObject(GLenum target) { + if (bound_fbo_ != fbo_) { + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fbo_); + } + GLenum fbo_status; + glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, + GL_COLOR_ATTACHMENT0_EXT, + target, + texture_, + 0); + fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); + if (fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT) { + glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, + GL_DEPTH_ATTACHMENT_EXT, + GL_RENDERBUFFER_EXT, + depth_stencil_renderbuffer_); + fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); + } + // Attach the depth and stencil buffer. + if (fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT) { + glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, + 0x8D20, // GL_STENCIL_ATTACHMENT, + GL_RENDERBUFFER_EXT, + depth_stencil_renderbuffer_); + fbo_status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); + } + if (bound_fbo_ != fbo_) { + glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, bound_fbo_); + } + return fbo_status == GL_FRAMEBUFFER_COMPLETE_EXT; +} + +bool AcceleratedSurface::MakeCurrent() { + if (CGLGetCurrentContext() != gl_context_) { + if (CGLSetCurrentContext(gl_context_) != kCGLNoError) { + DLOG(ERROR) << "Unable to make gl context current."; + return false; + } + } + return true; +} + +void AcceleratedSurface::Clear(const gfx::Rect& rect) { + glClearColor(1.0, 1.0, 1.0, 1.0); + glViewport(0, 0, rect.width(), rect.height()); + glMatrixMode(GL_PROJECTION); + glLoadIdentity(); + glOrtho(0, rect.width(), 0, rect.height(), -1, 1); + glClear(GL_COLOR_BUFFER_BIT); +} + +uint64 AcceleratedSurface::SetSurfaceSize(int32 width, int32 height) { + if (surface_width_ == width && surface_height_ == height) { + // Return 0 to indicate to the caller that no new backing store + // allocation occurred. + return 0; + } + + IOSurfaceSupport* io_surface_support = IOSurfaceSupport::Initialize(); + if (!io_surface_support) + return 0; // Caller can try using SetWindowSizeForTransportDIB(). + + if (!MakeCurrent()) + return 0; + + // GL_TEXTURE_RECTANGLE_ARB is the best supported render target on + // Mac OS X and is required for IOSurface interoperability. + GLenum target = GL_TEXTURE_RECTANGLE_ARB; + AllocateRenderBuffers(target, width, height); + + // Allocate a new IOSurface, which is the GPU resource that can be + // shared across processes. + scoped_cftyperef<CFMutableDictionaryRef> properties; + properties.reset(CFDictionaryCreateMutable(kCFAllocatorDefault, + 0, + &kCFTypeDictionaryKeyCallBacks, + &kCFTypeDictionaryValueCallBacks)); + AddIntegerValue(properties, + io_surface_support->GetKIOSurfaceWidth(), width); + AddIntegerValue(properties, + io_surface_support->GetKIOSurfaceHeight(), height); + AddIntegerValue(properties, + io_surface_support->GetKIOSurfaceBytesPerElement(), 4); + AddBooleanValue(properties, + io_surface_support->GetKIOSurfaceIsGlobal(), true); + // I believe we should be able to unreference the IOSurfaces without + // synchronizing with the browser process because they are + // ultimately reference counted by the operating system. + io_surface_.reset(io_surface_support->IOSurfaceCreate(properties)); + + // Don't think we need to identify a plane. + GLuint plane = 0; + io_surface_support->CGLTexImageIOSurface2D(gl_context_, + target, + GL_RGBA, + width, + height, + GL_BGRA, + GL_UNSIGNED_INT_8_8_8_8_REV, + io_surface_.get(), + plane); + // Set up the frame buffer object. + SetupFrameBufferObject(target); + surface_width_ = width; + surface_height_ = height; + + // Now send back an identifier for the IOSurface. We originally + // intended to send back a mach port from IOSurfaceCreateMachPort + // but it looks like Chrome IPC would need to be modified to + // properly send mach ports between processes. For the time being we + // make our IOSurfaces global and send back their identifiers. On + // the browser process side the identifier is reconstituted into an + // IOSurface for on-screen rendering. + return io_surface_support->IOSurfaceGetID(io_surface_); +} + +TransportDIB::Handle AcceleratedSurface::SetTransportDIBSize( + int32 width, int32 height) { + if (surface_width_ == width && surface_height_ == height) { + // Return an invalid handle to indicate to the caller that no new backing + // store allocation occurred. + return TransportDIB::DefaultHandleValue(); + } + surface_width_ = width; + surface_height_ = height; + + // Release the old TransportDIB in the browser. + if (dib_free_callback_.get() && transport_dib_.get()) { + dib_free_callback_->Run(transport_dib_->id()); + } + transport_dib_.reset(); + + // Ask the renderer to create a TransportDIB. + size_t dib_size = width * 4 * height; // 4 bytes per pixel. + TransportDIB::Handle dib_handle; + if (dib_alloc_callback_.get()) { + dib_alloc_callback_->Run(dib_size, &dib_handle); + } + if (!TransportDIB::is_valid(dib_handle)) { + // If the allocator fails, it means the DIB was not created in the browser, + // so there is no need to run the deallocator here. + return TransportDIB::DefaultHandleValue(); + } + transport_dib_.reset(TransportDIB::Map(dib_handle)); + if (transport_dib_.get() == NULL) { + // TODO(dspringer): if the Map() fails, should the deallocator be run so + // that the DIB is deallocated in the browser? + return TransportDIB::DefaultHandleValue(); + } + + // Set up the render buffers and reserve enough space on the card for the + // framebuffer texture. + GLenum target = GL_TEXTURE_RECTANGLE_ARB; + AllocateRenderBuffers(target, width, height); + glTexImage2D(target, + 0, // mipmap level 0 + GL_RGBA8, // internal pixel format + width, + height, + 0, // 0 border + GL_BGRA, // Used for consistency + GL_UNSIGNED_INT_8_8_8_8_REV, + NULL); // No data, just reserve room on the card. + SetupFrameBufferObject(target); + return transport_dib_->handle(); +} + +void AcceleratedSurface::SetTransportDIBAllocAndFree( + Callback2<size_t, TransportDIB::Handle*>::Type* allocator, + Callback1<TransportDIB::Id>::Type* deallocator) { + dib_alloc_callback_.reset(allocator); + dib_free_callback_.reset(deallocator); +} diff --git a/app/surface/accelerated_surface_mac.h b/app/surface/accelerated_surface_mac.h new file mode 100644 index 0000000..32cd0df --- /dev/null +++ b/app/surface/accelerated_surface_mac.h @@ -0,0 +1,108 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef APP_SURFACE_ACCELERATED_SURFACE_MAC_H_ +#define APP_SURFACE_ACCELERATED_SURFACE_MAC_H_ + +#include <CoreFoundation/CoreFoundation.h> +#include <OpenGL/OpenGL.h> + +#include "app/surface/transport_dib.h" +#include "base/callback.h" +#include "base/scoped_cftyperef.h" +#include "base/scoped_ptr.h" + +namespace gfx { +class Rect; +} + +// Encapsulates an accelerated GL surface that can be shared across processes +// on systems that support it (10.6 and above). For systems that do not, it +// uses a regular dib. There will either be a GL Context or a TransportDIB, +// never both. + +class AcceleratedSurface { + public: + AcceleratedSurface(); + virtual ~AcceleratedSurface() { } + + // Set up internal buffers. Returns false upon failure. + bool Initialize(); + // Tear down. Must be called before destructor to prevent leaks. + void Destroy(); + + // These methods are used only when there is a GL surface. + + // Sets the accelerated surface to the given size, creating a new one if + // the height or width changes. Returns a unique id of the IOSurface to + // which the surface is bound, or 0 if no changes were made or an error + // occurred. MakeCurrent() will have been called on the new surface. + uint64 SetSurfaceSize(int32 width, int32 height); + // Sets the GL context to be the current one for drawing. Returns true if + // it succeeded. + bool MakeCurrent(); + // Clear the surface to all white. Assumes the caller has already called + // MakeCurrent(). + void Clear(const gfx::Rect& rect); + // Call after making changes to the surface which require a visual update. + // Makes the rendering show up in other processes. + void SwapBuffers(); + CGLContextObj context() { return gl_context_; } + + // These methods are only used when there is a transport DIB. + + // Sets the transport DIB to the given size, creating a new one if the + // height or width changes. Returns a handle to the new DIB, or a default + // handle if no changes were made. + TransportDIB::Handle SetTransportDIBSize(int32 width, int32 height); + // Sets the methods to use for allocating and freeing memory for the + // transport DIB. + void SetTransportDIBAllocAndFree( + Callback2<size_t, TransportDIB::Handle*>::Type* allocator, + Callback1<TransportDIB::Id>::Type* deallocator); + + private: + // Helper function to generate names for the backing texture, render buffers + // and FBO. On return, the resulting buffer names can be attached to |fbo_|. + // |target| is the target type for the color buffer. + void AllocateRenderBuffers(GLenum target, int32 width, int32 height); + + // Helper function to attach the buffers previously allocated by a call to + // AllocateRenderBuffers(). On return, |fbo_| can be used for + // rendering. |target| must be the same value as used in the call to + // AllocateRenderBuffers(). Returns |true| if the resulting framebuffer + // object is valid. + bool SetupFrameBufferObject(GLenum target); + + CGLContextObj gl_context_; + CGLPBufferObj pbuffer_; + // Either |io_surface_| or |transport_dib_| is a valid pointer, but not both. + // |io_surface_| is non-NULL if the IOSurface APIs are supported (Mac OS X + // 10.6 and later). + // TODO(dspringer,kbr): Should the GPU backing store be encapsulated in its + // own class so all this implementation detail is hidden? + scoped_cftyperef<CFTypeRef> io_surface_; + // TODO(dspringer): If we end up keeping this TransportDIB mechanism, this + // should really be a scoped_ptr_malloc<>, with a deallocate functor that + // runs |dib_free_callback_|. I was not able to figure out how to + // make this work (or even compile). + scoped_ptr<TransportDIB> transport_dib_; + int32 surface_width_; + int32 surface_height_; + GLuint texture_; + GLuint fbo_; + GLuint depth_stencil_renderbuffer_; + // For tracking whether the default framebuffer / renderbuffer or + // ones created by the end user are currently bound + // TODO(kbr): Need to property hook up and track the OpenGL state and hook + // up the notion of the currently bound FBO. + GLuint bound_fbo_; + GLuint bound_renderbuffer_; + // Allocate a TransportDIB in the renderer. + scoped_ptr<Callback2<size_t, TransportDIB::Handle*>::Type> + dib_alloc_callback_; + scoped_ptr<Callback1<TransportDIB::Id>::Type> dib_free_callback_; +}; + +#endif // APP_SURFACE_ACCELERATED_SURFACE_MAC_H_ diff --git a/app/surface/io_surface_support_mac.cc b/app/surface/io_surface_support_mac.cc new file mode 100644 index 0000000..fed66602 --- /dev/null +++ b/app/surface/io_surface_support_mac.cc @@ -0,0 +1,242 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include <dlfcn.h> + +#include "base/singleton.h" +#include "app/surface/io_surface_support_mac.h" + +typedef CFTypeRef (*IOSurfaceCreateProcPtr)(CFDictionaryRef properties); +typedef uint32 (*IOSurfaceGetIDProcPtr)(CFTypeRef io_surface); +typedef CFTypeRef (*IOSurfaceLookupProcPtr)(uint32 io_surface_id); +typedef mach_port_t (*IOSurfaceCreateMachPortProcPtr)(CFTypeRef io_surface); +typedef CFTypeRef (*IOSurfaceLookupFromMachPortProcPtr)(mach_port_t port); +typedef CGLError (*CGLTexImageIOSurface2DProcPtr)(CGLContextObj ctx, + GLenum target, + GLenum internal_format, + GLsizei width, + GLsizei height, + GLenum format, + GLenum type, + CFTypeRef io_surface, + GLuint plane); + +class IOSurfaceSupportImpl : public IOSurfaceSupport { + public: + static IOSurfaceSupportImpl* Initialize(); + + bool InitializedSuccessfully() { + return initialized_successfully_; + } + + virtual CFStringRef GetKIOSurfaceWidth(); + virtual CFStringRef GetKIOSurfaceHeight(); + virtual CFStringRef GetKIOSurfaceBytesPerElement(); + virtual CFStringRef GetKIOSurfaceIsGlobal(); + + virtual CFTypeRef IOSurfaceCreate(CFDictionaryRef properties); + virtual uint32 IOSurfaceGetID(CFTypeRef io_surface); + virtual CFTypeRef IOSurfaceLookup(uint32 io_surface_id); + virtual mach_port_t IOSurfaceCreateMachPort(CFTypeRef io_surface); + virtual CFTypeRef IOSurfaceLookupFromMachPort(mach_port_t port); + + virtual CGLError CGLTexImageIOSurface2D(CGLContextObj ctx, + GLenum target, + GLenum internal_format, + GLsizei width, + GLsizei height, + GLenum format, + GLenum type, + CFTypeRef io_surface, + GLuint plane); + + private: + IOSurfaceSupportImpl(); + ~IOSurfaceSupportImpl(); + + void* iosurface_handle_; + void* opengl_handle_; + CFStringRef k_io_surface_width_; + CFStringRef k_io_surface_height_; + CFStringRef k_io_surface_bytes_per_element_; + CFStringRef k_io_surface_is_global_; + IOSurfaceCreateProcPtr io_surface_create_; + IOSurfaceGetIDProcPtr io_surface_get_id_; + IOSurfaceLookupProcPtr io_surface_lookup_; + IOSurfaceCreateMachPortProcPtr io_surface_create_mach_port_; + IOSurfaceLookupFromMachPortProcPtr io_surface_lookup_from_mach_port_; + CGLTexImageIOSurface2DProcPtr cgl_tex_image_io_surface_2d_; + bool initialized_successfully_; + + friend struct DefaultSingletonTraits<IOSurfaceSupportImpl>; + DISALLOW_EVIL_CONSTRUCTORS(IOSurfaceSupportImpl); +}; + +static Singleton<IOSurfaceSupportImpl> sole_instance_; + +IOSurfaceSupportImpl* IOSurfaceSupportImpl::Initialize() { + IOSurfaceSupportImpl* impl = sole_instance_.get(); + if (impl->InitializedSuccessfully()) + return impl; + return NULL; +} + +CFStringRef IOSurfaceSupportImpl::GetKIOSurfaceWidth() { + return k_io_surface_width_; +} + +CFStringRef IOSurfaceSupportImpl::GetKIOSurfaceHeight() { + return k_io_surface_height_; +} + +CFStringRef IOSurfaceSupportImpl::GetKIOSurfaceBytesPerElement() { + return k_io_surface_bytes_per_element_; +} + +CFStringRef IOSurfaceSupportImpl::GetKIOSurfaceIsGlobal() { + return k_io_surface_is_global_; +} + +CFTypeRef IOSurfaceSupportImpl::IOSurfaceCreate(CFDictionaryRef properties) { + return io_surface_create_(properties); +} + +uint32 IOSurfaceSupportImpl::IOSurfaceGetID( + CFTypeRef io_surface) { + return io_surface_get_id_(io_surface); +} + +CFTypeRef IOSurfaceSupportImpl::IOSurfaceLookup(uint32 io_surface_id) { + return io_surface_lookup_(io_surface_id); +} + +mach_port_t IOSurfaceSupportImpl::IOSurfaceCreateMachPort( + CFTypeRef io_surface) { + return io_surface_create_mach_port_(io_surface); +} + +CFTypeRef IOSurfaceSupportImpl::IOSurfaceLookupFromMachPort(mach_port_t port) { + return io_surface_lookup_from_mach_port_(port); +} + +CGLError IOSurfaceSupportImpl::CGLTexImageIOSurface2D(CGLContextObj ctx, + GLenum target, + GLenum internal_format, + GLsizei width, + GLsizei height, + GLenum format, + GLenum type, + CFTypeRef io_surface, + GLuint plane) { + return cgl_tex_image_io_surface_2d_(ctx, + target, + internal_format, + width, + height, + format, + type, + io_surface, + plane); +} + +IOSurfaceSupportImpl::IOSurfaceSupportImpl() + : iosurface_handle_(NULL), + opengl_handle_(NULL), + k_io_surface_width_(NULL), + k_io_surface_height_(NULL), + k_io_surface_bytes_per_element_(NULL), + k_io_surface_is_global_(NULL), + io_surface_create_(NULL), + io_surface_get_id_(NULL), + io_surface_lookup_(NULL), + io_surface_create_mach_port_(NULL), + io_surface_lookup_from_mach_port_(NULL), + cgl_tex_image_io_surface_2d_(NULL), + initialized_successfully_(false) { + iosurface_handle_ = dlopen( + "/System/Library/Frameworks/IOSurface.framework/IOSurface", + RTLD_LAZY | RTLD_LOCAL); + if (!iosurface_handle_) + return; + opengl_handle_ = dlopen( + "/System/Library/Frameworks/OpenGL.framework/OpenGL", + RTLD_LAZY | RTLD_LOCAL); + if (!opengl_handle_) { + dlclose(iosurface_handle_); + iosurface_handle_ = NULL; + return; + } + + void* surface_width_ptr = dlsym(iosurface_handle_, "kIOSurfaceWidth"); + void* surface_height_ptr = dlsym(iosurface_handle_, "kIOSurfaceHeight"); + void* surface_bytes_per_element_ptr = + dlsym(iosurface_handle_, "kIOSurfaceBytesPerElement"); + void* surface_is_global_ptr = + dlsym(iosurface_handle_, "kIOSurfaceIsGlobal"); + void* surface_create_ptr = dlsym(iosurface_handle_, "IOSurfaceCreate"); + void* surface_get_id_ptr = dlsym(iosurface_handle_, "IOSurfaceGetID"); + void* surface_lookup_ptr = dlsym(iosurface_handle_, "IOSurfaceLookup"); + void* surface_create_mach_port_ptr = + dlsym(iosurface_handle_, "IOSurfaceCreateMachPort"); + void* surface_lookup_from_mach_port_ptr = + dlsym(iosurface_handle_, "IOSurfaceLookupFromMachPort"); + void* tex_image_io_surface_2d_ptr = + dlsym(opengl_handle_, "CGLTexImageIOSurface2D"); + if (!surface_width_ptr || + !surface_height_ptr || + !surface_bytes_per_element_ptr || + !surface_is_global_ptr || + !surface_create_ptr || + !surface_get_id_ptr || + !surface_lookup_ptr || + !surface_create_mach_port_ptr || + !surface_lookup_from_mach_port_ptr || + !tex_image_io_surface_2d_ptr) { + dlclose(iosurface_handle_); + iosurface_handle_ = NULL; + dlclose(opengl_handle_); + opengl_handle_ = NULL; + return; + } + + k_io_surface_width_ = *static_cast<CFStringRef*>(surface_width_ptr); + k_io_surface_height_ = *static_cast<CFStringRef*>(surface_height_ptr); + k_io_surface_bytes_per_element_ = + *static_cast<CFStringRef*>(surface_bytes_per_element_ptr); + k_io_surface_is_global_ = *static_cast<CFStringRef*>(surface_is_global_ptr); + io_surface_create_ = reinterpret_cast<IOSurfaceCreateProcPtr>( + surface_create_ptr); + io_surface_get_id_ = + reinterpret_cast<IOSurfaceGetIDProcPtr>(surface_get_id_ptr); + io_surface_lookup_ = + reinterpret_cast<IOSurfaceLookupProcPtr>(surface_lookup_ptr); + io_surface_create_mach_port_ = + reinterpret_cast<IOSurfaceCreateMachPortProcPtr>( + surface_create_mach_port_ptr); + io_surface_lookup_from_mach_port_ = + reinterpret_cast<IOSurfaceLookupFromMachPortProcPtr>( + surface_lookup_from_mach_port_ptr); + cgl_tex_image_io_surface_2d_ = + reinterpret_cast<CGLTexImageIOSurface2DProcPtr>( + tex_image_io_surface_2d_ptr); + initialized_successfully_ = true; +} + +IOSurfaceSupportImpl::~IOSurfaceSupportImpl() { + if (iosurface_handle_) + dlclose(iosurface_handle_); + if (opengl_handle_) + dlclose(opengl_handle_); +} + +IOSurfaceSupport* IOSurfaceSupport::Initialize() { + return IOSurfaceSupportImpl::Initialize(); +} + +IOSurfaceSupport::IOSurfaceSupport() { +} + +IOSurfaceSupport::~IOSurfaceSupport() { +} + diff --git a/app/surface/io_surface_support_mac.h b/app/surface/io_surface_support_mac.h new file mode 100644 index 0000000..7386490 --- /dev/null +++ b/app/surface/io_surface_support_mac.h @@ -0,0 +1,66 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef APP_SURFACE_IO_SURFACE_SUPPORT_MAC_H_ +#define APP_SURFACE_IO_SURFACE_SUPPORT_MAC_H_ + +#include <CoreFoundation/CoreFoundation.h> +#include <mach/mach.h> +#include <OpenGL/OpenGL.h> + +#include "base/basictypes.h" + +// This Mac OS X-specific class provides dynamically-linked access to +// IOSurface.framework, which is only available on 10.6 and later. +// Since Chromium is built on 10.5 we must dynamically look up all of +// the entry points we need in this framework. + +// See IOSurface/IOSurfaceAPI.h and OpenGL/CGLIOSurface.h on 10.6 for +// documentation of the fields and methods of this class. + +class IOSurfaceSupport { + public: + // Returns an instance of the IOSurfaceSupport class if the + // operating system supports it, NULL otherwise. It is safe to call + // this multiple times. + static IOSurfaceSupport* Initialize(); + + virtual CFStringRef GetKIOSurfaceWidth() = 0; + virtual CFStringRef GetKIOSurfaceHeight() = 0; + virtual CFStringRef GetKIOSurfaceBytesPerElement() = 0; + virtual CFStringRef GetKIOSurfaceIsGlobal() = 0; + + virtual CFTypeRef IOSurfaceCreate(CFDictionaryRef properties) = 0; + + // The following two APIs assume the IOSurface was created with the + // kIOSurfaceIsGlobal key set to true + virtual uint32 IOSurfaceGetID(CFTypeRef io_surface) = 0; + virtual CFTypeRef IOSurfaceLookup(uint32 io_surface_id) = 0; + + // The following two APIs are more robust and secure, but + // unfortunately it looks like it will be a lot of work to correctly + // transmit a mach port from process to process (possibly requiring + // a side channel for or extension of the Chrome IPC mechanism) + virtual mach_port_t IOSurfaceCreateMachPort(CFTypeRef io_surface) = 0; + virtual CFTypeRef IOSurfaceLookupFromMachPort(mach_port_t port) = 0; + + virtual CGLError CGLTexImageIOSurface2D(CGLContextObj ctx, + GLenum target, + GLenum internal_format, + GLsizei width, + GLsizei height, + GLenum format, + GLenum type, + CFTypeRef io_surface, + GLuint plane) = 0; + + protected: + IOSurfaceSupport(); + virtual ~IOSurfaceSupport(); + + DISALLOW_COPY_AND_ASSIGN(IOSurfaceSupport); +}; + +#endif // APP_SURFACE_IO_SURFACE_SUPPORT_MAC_H_ + diff --git a/app/surface/transport_dib.h b/app/surface/transport_dib.h new file mode 100644 index 0000000..7a60f08 --- /dev/null +++ b/app/surface/transport_dib.h @@ -0,0 +1,156 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef APP_SURFACE_TRANSPORT_DIB_H_ +#define APP_SURFACE_TRANSPORT_DIB_H_ + +#include "base/basictypes.h" + +#if defined(OS_WIN) || defined(OS_MACOSX) +#include "base/shared_memory.h" +#endif + +#if defined(OS_WIN) +#include <windows.h> +#elif defined(USE_X11) +#include "app/x11_util.h" +#endif + +namespace gfx { +class Size; +} +namespace skia { +class PlatformCanvas; +} + +// ----------------------------------------------------------------------------- +// A TransportDIB is a block of memory that is used to transport pixels +// between processes: from the renderer process to the browser, and +// between renderer and plugin processes. +// ----------------------------------------------------------------------------- +class TransportDIB { + public: + ~TransportDIB(); + + // Two typedefs are defined. A Handle is the type which can be sent over + // the wire so that the remote side can map the transport DIB. The Id typedef + // is sufficient to identify the transport DIB when you know that the remote + // side already may have it mapped. +#if defined(OS_WIN) + typedef HANDLE Handle; + // On Windows, the Id type includes a sequence number (epoch) to solve an ABA + // issue: + // 1) Process A creates a transport DIB with HANDLE=1 and sends to B. + // 2) Process B maps the transport DIB and caches 1 -> DIB. + // 3) Process A closes the transport DIB and creates a new one. The new DIB + // is also assigned HANDLE=1. + // 4) Process A sends the Handle to B, but B incorrectly believes that it + // already has it cached. + struct HandleAndSequenceNum { + HandleAndSequenceNum() + : handle(NULL), + sequence_num(0) { + } + + HandleAndSequenceNum(HANDLE h, uint32 seq_num) + : handle(h), + sequence_num(seq_num) { + } + + bool operator< (const HandleAndSequenceNum& other) const { + // Use the lexicographic order on the tuple <handle, sequence_num>. + if (other.handle != handle) + return other.handle < handle; + return other.sequence_num < sequence_num; + } + + HANDLE handle; + uint32 sequence_num; + }; + typedef HandleAndSequenceNum Id; + + // Returns a default, invalid handle, that is meant to indicate a missing + // Transport DIB. + static Handle DefaultHandleValue() { return NULL; } +#elif defined(OS_MACOSX) + typedef base::SharedMemoryHandle Handle; + // On Mac, the inode number of the backing file is used as an id. + typedef base::SharedMemoryId Id; + + // Returns a default, invalid handle, that is meant to indicate a missing + // Transport DIB. + static Handle DefaultHandleValue() { return Handle(); } +#elif defined(USE_X11) + typedef int Handle; // These two ints are SysV IPC shared memory keys + typedef int Id; + + // Returns a default, invalid handle, that is meant to indicate a missing + // Transport DIB. + static Handle DefaultHandleValue() { return -1; } +#endif + + // Create a new TransportDIB, returning NULL on failure. + // + // The size is the minimum size in bytes of the memory backing the transport + // DIB (we may actually allocate more than that to give us better reuse when + // cached). + // + // The sequence number is used to uniquely identify the transport DIB. It + // should be unique for all transport DIBs ever created in the same + // renderer. + static TransportDIB* Create(size_t size, uint32 sequence_num); + + // Map the referenced transport DIB. Returns NULL on failure. + static TransportDIB* Map(Handle transport_dib); + + // Returns true if the handle is valid. + static bool is_valid(Handle dib); + + // Returns a canvas using the memory of this TransportDIB. The returned + // pointer will be owned by the caller. The bitmap will be of the given size, + // which should fit inside this memory. + skia::PlatformCanvas* GetPlatformCanvas(int w, int h); + + // Return a pointer to the shared memory + void* memory() const; + + // Return the maximum size of the shared memory. This is not the amount of + // data which is valid, you have to know that via other means, this is simply + // the maximum amount that /could/ be valid. + size_t size() const { return size_; } + + // Return the identifier which can be used to refer to this shared memory + // on the wire. + Id id() const; + + // Return a handle to the underlying shared memory. This can be sent over the + // wire to give this transport DIB to another process. + Handle handle() const; + +#if defined(USE_X11) + // Map the shared memory into the X server and return an id for the shared + // segment. + XID MapToX(Display* connection); +#endif + + private: + TransportDIB(); +#if defined(OS_WIN) || defined(OS_MACOSX) + explicit TransportDIB(base::SharedMemoryHandle dib); + base::SharedMemory shared_memory_; + uint32 sequence_num_; +#elif defined(USE_X11) + int key_; // SysV shared memory id + void* address_; // mapped address + XSharedMemoryId x_shm_; // X id for the shared segment + Display* display_; // connection to the X server +#endif + size_t size_; // length, in bytes + + DISALLOW_COPY_AND_ASSIGN(TransportDIB); +}; + +class MessageLoop; + +#endif // APP_SURFACE_TRANSPORT_DIB_H_ diff --git a/app/surface/transport_dib_linux.cc b/app/surface/transport_dib_linux.cc new file mode 100644 index 0000000..6c41a0c --- /dev/null +++ b/app/surface/transport_dib_linux.cc @@ -0,0 +1,113 @@ +// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include <errno.h> +#include <stdlib.h> +#include <sys/ipc.h> +#include <sys/shm.h> + +#include "app/surface/transport_dib.h" +#include "app/x11_util.h" +#include "base/logging.h" +#include "gfx/size.h" +#include "skia/ext/platform_canvas.h" + +// The shmat system call uses this as it's invalid return address +static void *const kInvalidAddress = (void*) -1; + +TransportDIB::TransportDIB() + : key_(-1), + address_(kInvalidAddress), + x_shm_(0), + display_(NULL), + size_(0) { +} + +TransportDIB::~TransportDIB() { + if (address_ != kInvalidAddress) { + shmdt(address_); + address_ = kInvalidAddress; + } + + if (x_shm_) { + DCHECK(display_); + x11_util::DetachSharedMemory(display_, x_shm_); + } +} + +// static +TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) { + // We use a mode of 0666 since the X server won't attach to memory which is + // 0600 since it can't know if it (as a root process) is being asked to map + // someone else's private shared memory region. + const int shmkey = shmget(IPC_PRIVATE, size, 0666); + if (shmkey == -1) { + DLOG(ERROR) << "Failed to create SysV shared memory region" + << " errno:" << errno; + return NULL; + } + + void* address = shmat(shmkey, NULL /* desired address */, 0 /* flags */); + // Here we mark the shared memory for deletion. Since we attached it in the + // line above, it doesn't actually get deleted but, if we crash, this means + // that the kernel will automatically clean it up for us. + shmctl(shmkey, IPC_RMID, 0); + if (address == kInvalidAddress) + return NULL; + + TransportDIB* dib = new TransportDIB; + + dib->key_ = shmkey; + dib->address_ = address; + dib->size_ = size; + return dib; +} + +TransportDIB* TransportDIB::Map(Handle shmkey) { + struct shmid_ds shmst; + if (shmctl(shmkey, IPC_STAT, &shmst) == -1) + return NULL; + + void* address = shmat(shmkey, NULL /* desired address */, 0 /* flags */); + if (address == kInvalidAddress) + return NULL; + + TransportDIB* dib = new TransportDIB; + + dib->address_ = address; + dib->size_ = shmst.shm_segsz; + dib->key_ = shmkey; + return dib; +} + +bool TransportDIB::is_valid(Handle dib) { + return dib >= 0; +} + +skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) { + return new skia::PlatformCanvas(w, h, true, + reinterpret_cast<uint8_t*>(memory())); +} + +void* TransportDIB::memory() const { + DCHECK_NE(address_, kInvalidAddress); + return address_; +} + +TransportDIB::Id TransportDIB::id() const { + return key_; +} + +TransportDIB::Handle TransportDIB::handle() const { + return key_; +} + +XID TransportDIB::MapToX(Display* display) { + if (!x_shm_) { + x_shm_ = x11_util::AttachSharedMemory(display, key_); + display_ = display; + } + + return x_shm_; +} diff --git a/app/surface/transport_dib_mac.cc b/app/surface/transport_dib_mac.cc new file mode 100644 index 0000000..cc56ab6 --- /dev/null +++ b/app/surface/transport_dib_mac.cc @@ -0,0 +1,77 @@ +// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "app/surface/transport_dib.h" + +#include <unistd.h> +#include <sys/stat.h> + +#include "base/eintr_wrapper.h" +#include "base/shared_memory.h" +#include "skia/ext/platform_canvas.h" + +TransportDIB::TransportDIB() + : size_(0) { +} + +TransportDIB::TransportDIB(TransportDIB::Handle dib) + : shared_memory_(dib, false /* read write */), + size_(0) { +} + +TransportDIB::~TransportDIB() { +} + +// static +TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) { + TransportDIB* dib = new TransportDIB; + if (!dib->shared_memory_.Create(L"", false /* read write */, + false /* do not open existing */, size)) { + delete dib; + return NULL; + } + + dib->size_ = size; + return dib; +} + +// static +TransportDIB* TransportDIB::Map(TransportDIB::Handle handle) { + if (!is_valid(handle)) + return NULL; + + TransportDIB* dib = new TransportDIB(handle); + struct stat st; + if ((fstat(handle.fd, &st) != 0) || + (!dib->shared_memory_.Map(st.st_size))) { + delete dib; + HANDLE_EINTR(close(handle.fd)); + return NULL; + } + + dib->size_ = st.st_size; + + return dib; +} + +bool TransportDIB::is_valid(Handle dib) { + return dib.fd >= 0; +} + +skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) { + return new skia::PlatformCanvas(w, h, true, + reinterpret_cast<uint8_t*>(memory())); +} + +void* TransportDIB::memory() const { + return shared_memory_.memory(); +} + +TransportDIB::Id TransportDIB::id() const { + return shared_memory_.id(); +} + +TransportDIB::Handle TransportDIB::handle() const { + return shared_memory_.handle(); +} diff --git a/app/surface/transport_dib_win.cc b/app/surface/transport_dib_win.cc new file mode 100644 index 0000000..2a92fb1 --- /dev/null +++ b/app/surface/transport_dib_win.cc @@ -0,0 +1,81 @@ +// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include <limits> +#include <windows.h> + +#include "app/surface/transport_dib.h" +#include "base/logging.h" +#include "base/sys_info.h" +#include "skia/ext/platform_canvas.h" + +TransportDIB::TransportDIB() { +} + +TransportDIB::~TransportDIB() { +} + +TransportDIB::TransportDIB(HANDLE handle) + : shared_memory_(handle, false /* read write */) { +} + +// static +TransportDIB* TransportDIB::Create(size_t size, uint32 sequence_num) { + size_t allocation_granularity = base::SysInfo::VMAllocationGranularity(); + size = size / allocation_granularity + 1; + size = size * allocation_granularity; + + TransportDIB* dib = new TransportDIB; + + if (!dib->shared_memory_.Create(L"", false /* read write */, + true /* open existing */, size)) { + delete dib; + return NULL; + } + + dib->size_ = size; + dib->sequence_num_ = sequence_num; + + return dib; +} + +// static +TransportDIB* TransportDIB::Map(TransportDIB::Handle handle) { + TransportDIB* dib = new TransportDIB(handle); + if (!dib->shared_memory_.Map(0 /* map whole shared memory segment */)) { + LOG(ERROR) << "Failed to map transport DIB" + << " handle:" << handle + << " error:" << GetLastError(); + delete dib; + return NULL; + } + + // There doesn't seem to be any way to find the size of the shared memory + // region! GetFileSize indicates that the handle is invalid. Thus, we + // conservatively set the size to the maximum and hope that the renderer + // isn't about to ask us to read off the end of the array. + dib->size_ = std::numeric_limits<size_t>::max(); + + return dib; +} + +bool TransportDIB::is_valid(Handle dib) { + return dib != NULL; +} + +skia::PlatformCanvas* TransportDIB::GetPlatformCanvas(int w, int h) { + return new skia::PlatformCanvas(w, h, true, handle()); +} + +void* TransportDIB::memory() const { + return shared_memory_.memory(); +} + +TransportDIB::Handle TransportDIB::handle() const { + return shared_memory_.handle(); +} + +TransportDIB::Id TransportDIB::id() const { + return Id(shared_memory_.handle(), sequence_num_); +} diff --git a/app/x11_util.cc b/app/x11_util.cc new file mode 100644 index 0000000..38799ad --- /dev/null +++ b/app/x11_util.cc @@ -0,0 +1,751 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +// This file defines utility functions for X11 (Linux only). This code has been +// ported from XCB since we can't use XCB on Ubuntu while its 32-bit support +// remains woefully incomplete. + +#include "app/x11_util.h" + +#include <gdk/gdk.h> +#include <gdk/gdkx.h> +#include <gtk/gtk.h> + +#include <sys/ipc.h> +#include <sys/shm.h> + +#include <list> +#include <set> + +#include "base/command_line.h" +#include "base/logging.h" +#include "base/thread.h" +#include "app/x11_util_internal.h" +#include "gfx/size.h" + +namespace x11_util { + +namespace { + +// Used to cache the XRenderPictFormat for a visual/display pair. +struct CachedPictFormat { + bool equals(Display* display, Visual* visual) const { + return display == this->display && visual == this->visual; + } + + Display* display; + Visual* visual; + XRenderPictFormat* format; +}; + +typedef std::list<CachedPictFormat> CachedPictFormats; + +// Returns the cache of pict formats. +CachedPictFormats* get_cached_pict_formats() { + static CachedPictFormats* formats = NULL; + if (!formats) + formats = new CachedPictFormats(); + return formats; +} + +// Maximum number of CachedPictFormats we keep around. +const size_t kMaxCacheSize = 5; + +} // namespace + +bool XDisplayExists() { + return (gdk_display_get_default() != NULL); +} + +Display* GetXDisplay() { + static Display* display = NULL; + + if (!display) + display = gdk_x11_get_default_xdisplay(); + + return display; +} + +static SharedMemorySupport DoQuerySharedMemorySupport(Display* dpy) { + // A temporary flag for tracking down shared memory problems. + // TODO(evanm): remove this. + if (CommandLine::ForCurrentProcess()->HasSwitch("disable-xshm")) + return SHARED_MEMORY_NONE; + + int dummy; + Bool pixmaps_supported; + // Query the server's support for XSHM. + if (!XShmQueryVersion(dpy, &dummy, &dummy, &pixmaps_supported)) + return SHARED_MEMORY_NONE; + + // Next we probe to see if shared memory will really work + int shmkey = shmget(IPC_PRIVATE, 1, 0666); + if (shmkey == -1) + return SHARED_MEMORY_NONE; + void* address = shmat(shmkey, NULL, 0); + // Mark the shared memory region for deletion + shmctl(shmkey, IPC_RMID, NULL); + + XShmSegmentInfo shminfo; + memset(&shminfo, 0, sizeof(shminfo)); + shminfo.shmid = shmkey; + + gdk_error_trap_push(); + bool result = XShmAttach(dpy, &shminfo); + XSync(dpy, False); + if (gdk_error_trap_pop()) + result = false; + shmdt(address); + if (!result) + return SHARED_MEMORY_NONE; + + XShmDetach(dpy, &shminfo); + return pixmaps_supported ? SHARED_MEMORY_PIXMAP : SHARED_MEMORY_PUTIMAGE; +} + +SharedMemorySupport QuerySharedMemorySupport(Display* dpy) { + static SharedMemorySupport shared_memory_support = SHARED_MEMORY_NONE; + static bool shared_memory_support_cached = false; + + if (shared_memory_support_cached) + return shared_memory_support; + + shared_memory_support = DoQuerySharedMemorySupport(dpy); + shared_memory_support_cached = true; + + return shared_memory_support; +} + +bool QueryRenderSupport(Display* dpy) { + static bool render_supported = false; + static bool render_supported_cached = false; + + if (render_supported_cached) + return render_supported; + + // We don't care about the version of Xrender since all the features which + // we use are included in every version. + int dummy; + render_supported = XRenderQueryExtension(dpy, &dummy, &dummy); + render_supported_cached = true; + + return render_supported; +} + +int GetDefaultScreen(Display* display) { + return XDefaultScreen(display); +} + +XID GetX11RootWindow() { + return GDK_WINDOW_XID(gdk_get_default_root_window()); +} + +XID GetX11WindowFromGtkWidget(GtkWidget* widget) { + return GDK_WINDOW_XID(widget->window); +} + +XID GetX11WindowFromGdkWindow(GdkWindow* window) { + return GDK_WINDOW_XID(window); +} + +void* GetVisualFromGtkWidget(GtkWidget* widget) { + return GDK_VISUAL_XVISUAL(gtk_widget_get_visual(widget)); +} + +int BitsPerPixelForPixmapDepth(Display* dpy, int depth) { + int count; + XPixmapFormatValues* formats = XListPixmapFormats(dpy, &count); + if (!formats) + return -1; + + int bits_per_pixel = -1; + for (int i = 0; i < count; ++i) { + if (formats[i].depth == depth) { + bits_per_pixel = formats[i].bits_per_pixel; + break; + } + } + + XFree(formats); + return bits_per_pixel; +} + +bool IsWindowVisible(XID window) { + XWindowAttributes win_attributes; + XGetWindowAttributes(GetXDisplay(), window, &win_attributes); + return (win_attributes.map_state == IsViewable); +} + +bool GetWindowRect(XID window, gfx::Rect* rect) { + Window root, child; + int x, y; + unsigned int width, height; + unsigned int border_width, depth; + + if (!XGetGeometry(GetXDisplay(), window, &root, &x, &y, + &width, &height, &border_width, &depth)) + return false; + + if (!XTranslateCoordinates(GetSecondaryDisplay(), window, root, + 0, 0, &x, &y, &child)) + return false; + + *rect = gfx::Rect(x, y, width, height); + return true; +} + +bool GetIntProperty(XID window, const std::string& property_name, int* value) { + Atom property_atom = gdk_x11_get_xatom_by_name_for_display( + gdk_display_get_default(), property_name.c_str()); + + Atom type = None; + int format = 0; // size in bits of each item in 'property' + long unsigned int num_items = 0, remaining_bytes = 0; + unsigned char* property = NULL; + + int result = XGetWindowProperty(GetXDisplay(), + window, + property_atom, + 0, // offset into property data to read + 1, // max length to get + False, // deleted + AnyPropertyType, + &type, + &format, + &num_items, + &remaining_bytes, + &property); + if (result != Success) + return false; + + if (format != 32 || num_items != 1) { + XFree(property); + return false; + } + + *value = *(reinterpret_cast<int*>(property)); + XFree(property); + return true; +} + +bool GetStringProperty( + XID window, const std::string& property_name, std::string* value) { + Atom property_atom = gdk_x11_get_xatom_by_name_for_display( + gdk_display_get_default(), property_name.c_str()); + + Atom type = None; + int format = 0; // size in bits of each item in 'property' + long unsigned int num_items = 0, remaining_bytes = 0; + unsigned char* property = NULL; + + int result = XGetWindowProperty(GetXDisplay(), + window, + property_atom, + 0, // offset into property data to read + 1024, // max length to get + False, // deleted + AnyPropertyType, + &type, + &format, + &num_items, + &remaining_bytes, + &property); + if (result != Success) + return false; + + if (format != 8) { + XFree(property); + return false; + } + + value->assign(reinterpret_cast<char*>(property), num_items); + XFree(property); + return true; +} + +XID GetParentWindow(XID window) { + XID root = None; + XID parent = None; + XID* children = NULL; + unsigned int num_children = 0; + XQueryTree(GetXDisplay(), window, &root, &parent, &children, &num_children); + if (children) + XFree(children); + return parent; +} + +XID GetHighestAncestorWindow(XID window, XID root) { + while (true) { + XID parent = x11_util::GetParentWindow(window); + if (parent == None) + return None; + if (parent == root) + return window; + window = parent; + } +} + +// Returns true if |window| is a named window. +bool IsWindowNamed(XID window) { + XTextProperty prop; + if (!XGetWMName(GetXDisplay(), window, &prop) || !prop.value) + return false; + + XFree(prop.value); + return true; +} + +bool EnumerateChildren(EnumerateWindowsDelegate* delegate, XID window, + const int max_depth, int depth) { + if (depth > max_depth) + return false; + + XID root, parent, *children; + unsigned int num_children; + int status = XQueryTree(GetXDisplay(), window, &root, &parent, &children, + &num_children); + if (status == 0) + return false; + + std::set<XID> windows; + for (unsigned int i = 0; i < num_children; i++) + windows.insert(children[i]); + + XFree(children); + + // XQueryTree returns the children of |window| in bottom-to-top order, so + // reverse-iterate the list to check the windows from top-to-bottom. + std::set<XID>::reverse_iterator iter; + for (iter = windows.rbegin(); iter != windows.rend(); iter++) { + if (IsWindowNamed(*iter) && delegate->ShouldStopIterating(*iter)) + return true; + } + + // If we're at this point, we didn't find the window we're looking for at the + // current level, so we need to recurse to the next level. We use a second + // loop because the recursion and call to XQueryTree are expensive and is only + // needed for a small number of cases. + if (++depth <= max_depth) { + for (iter = windows.rbegin(); iter != windows.rend(); iter++) { + if (EnumerateChildren(delegate, *iter, max_depth, depth)) + return true; + } + } + + return false; +} + +bool EnumerateAllWindows(EnumerateWindowsDelegate* delegate, int max_depth) { + XID root = GetX11RootWindow(); + return EnumerateChildren(delegate, root, max_depth, 0); +} + +bool GetXWindowStack(std::vector<XID>* windows) { + windows->clear(); + + static Atom atom = XInternAtom(GetXDisplay(), + "_NET_CLIENT_LIST_STACKING", False); + + Atom type; + int format; + unsigned long count; + unsigned long bytes_after; + unsigned char *data = NULL; + if (XGetWindowProperty(GetXDisplay(), + GetX11RootWindow(), + atom, + 0, // offset + ~0L, // length + False, // delete + AnyPropertyType, // requested type + &type, + &format, + &count, + &bytes_after, + &data) != Success) { + return false; + } + + bool result = false; + if (type == XA_WINDOW && format == 32 && data && count > 0) { + result = true; + XID* stack = reinterpret_cast<XID*>(data); + for (unsigned long i = 0; i < count; i++) + windows->insert(windows->begin(), stack[i]); + } + + if (data) + XFree(data); + + return result; +} + +void RestackWindow(XID window, XID sibling, bool above) { + XWindowChanges changes; + changes.sibling = sibling; + changes.stack_mode = above ? Above : Below; + XConfigureWindow(GetXDisplay(), window, CWSibling | CWStackMode, &changes); +} + +XRenderPictFormat* GetRenderVisualFormat(Display* dpy, Visual* visual) { + DCHECK(QueryRenderSupport(dpy)); + + CachedPictFormats* formats = get_cached_pict_formats(); + + for (CachedPictFormats::const_iterator i = formats->begin(); + i != formats->end(); ++i) { + if (i->equals(dpy, visual)) + return i->format; + } + + // Not cached, look up the value. + XRenderPictFormat* pictformat = XRenderFindVisualFormat(dpy, visual); + CHECK(pictformat) << "XRENDER does not support default visual"; + + // And store it in the cache. + CachedPictFormat cached_value; + cached_value.visual = visual; + cached_value.display = dpy; + cached_value.format = pictformat; + formats->push_front(cached_value); + + if (formats->size() == kMaxCacheSize) { + formats->pop_back(); + // We should really only have at most 2 display/visual combinations: + // one for normal browser windows, and possibly another for an argb window + // created to display a menu. + // + // If we get here it's not fatal, we just need to make sure we aren't + // always blowing away the cache. If we are, then we should figure out why + // and make it bigger. + NOTREACHED(); + } + + return pictformat; +} + +XRenderPictFormat* GetRenderARGB32Format(Display* dpy) { + static XRenderPictFormat* pictformat = NULL; + if (pictformat) + return pictformat; + + // First look for a 32-bit format which ignores the alpha value + XRenderPictFormat templ; + templ.depth = 32; + templ.type = PictTypeDirect; + templ.direct.red = 16; + templ.direct.green = 8; + templ.direct.blue = 0; + templ.direct.redMask = 0xff; + templ.direct.greenMask = 0xff; + templ.direct.blueMask = 0xff; + templ.direct.alphaMask = 0; + + static const unsigned long kMask = + PictFormatType | PictFormatDepth | + PictFormatRed | PictFormatRedMask | + PictFormatGreen | PictFormatGreenMask | + PictFormatBlue | PictFormatBlueMask | + PictFormatAlphaMask; + + pictformat = XRenderFindFormat(dpy, kMask, &templ, 0 /* first result */); + + if (!pictformat) { + // Not all X servers support xRGB32 formats. However, the XRENDER spec says + // that they must support an ARGB32 format, so we can always return that. + pictformat = XRenderFindStandardFormat(dpy, PictStandardARGB32); + CHECK(pictformat) << "XRENDER ARGB32 not supported."; + } + + return pictformat; +} + +XSharedMemoryId AttachSharedMemory(Display* display, int shared_memory_key) { + DCHECK(QuerySharedMemorySupport(display)); + + XShmSegmentInfo shminfo; + memset(&shminfo, 0, sizeof(shminfo)); + shminfo.shmid = shared_memory_key; + + // This function is only called if QuerySharedMemorySupport returned true. In + // which case we've already succeeded in having the X server attach to one of + // our shared memory segments. + if (!XShmAttach(display, &shminfo)) + NOTREACHED(); + + return shminfo.shmseg; +} + +void DetachSharedMemory(Display* display, XSharedMemoryId shmseg) { + DCHECK(QuerySharedMemorySupport(display)); + + XShmSegmentInfo shminfo; + memset(&shminfo, 0, sizeof(shminfo)); + shminfo.shmseg = shmseg; + + if (!XShmDetach(display, &shminfo)) + NOTREACHED(); +} + +XID CreatePictureFromSkiaPixmap(Display* display, XID pixmap) { + XID picture = XRenderCreatePicture( + display, pixmap, GetRenderARGB32Format(display), 0, NULL); + + return picture; +} + +void PutARGBImage(Display* display, void* visual, int depth, XID pixmap, + void* pixmap_gc, const uint8* data, int width, int height) { + // TODO(scherkus): potential performance impact... consider passing in as a + // parameter. + int pixmap_bpp = BitsPerPixelForPixmapDepth(display, depth); + + XImage image; + memset(&image, 0, sizeof(image)); + + image.width = width; + image.height = height; + image.format = ZPixmap; + image.byte_order = LSBFirst; + image.bitmap_unit = 8; + image.bitmap_bit_order = LSBFirst; + image.depth = depth; + image.bits_per_pixel = pixmap_bpp; + image.bytes_per_line = width * pixmap_bpp / 8; + + if (pixmap_bpp == 32) { + image.red_mask = 0xff0000; + image.green_mask = 0xff00; + image.blue_mask = 0xff; + + // If the X server depth is already 32-bits and the color masks match, + // then our job is easy. + Visual* vis = static_cast<Visual*>(visual); + if (image.red_mask == vis->red_mask && + image.green_mask == vis->green_mask && + image.blue_mask == vis->blue_mask) { + image.data = const_cast<char*>(reinterpret_cast<const char*>(data)); + XPutImage(display, pixmap, static_cast<GC>(pixmap_gc), &image, + 0, 0 /* source x, y */, 0, 0 /* dest x, y */, + width, height); + } else { + // Otherwise, we need to shuffle the colors around. Assume red and blue + // need to be swapped. + // + // It's possible to use some fancy SSE tricks here, but since this is the + // slow path anyway, we do it slowly. + + uint8_t* bitmap32 = static_cast<uint8_t*>(malloc(4 * width * height)); + if (!bitmap32) + return; + uint8_t* const orig_bitmap32 = bitmap32; + const uint32_t* bitmap_in = reinterpret_cast<const uint32_t*>(data); + for (int y = 0; y < height; ++y) { + for (int x = 0; x < width; ++x) { + const uint32_t pixel = *(bitmap_in++); + bitmap32[0] = (pixel >> 16) & 0xff; // Red + bitmap32[1] = (pixel >> 8) & 0xff; // Green + bitmap32[2] = pixel & 0xff; // Blue + bitmap32[3] = (pixel >> 24) & 0xff; // Alpha + bitmap32 += 4; + } + } + image.data = reinterpret_cast<char*>(orig_bitmap32); + XPutImage(display, pixmap, static_cast<GC>(pixmap_gc), &image, + 0, 0 /* source x, y */, 0, 0 /* dest x, y */, + width, height); + free(orig_bitmap32); + } + } else if (pixmap_bpp == 16) { + // Some folks have VNC setups which still use 16-bit visuals and VNC + // doesn't include Xrender. + + uint16_t* bitmap16 = static_cast<uint16_t*>(malloc(2 * width * height)); + if (!bitmap16) + return; + uint16_t* const orig_bitmap16 = bitmap16; + const uint32_t* bitmap_in = reinterpret_cast<const uint32_t*>(data); + for (int y = 0; y < height; ++y) { + for (int x = 0; x < width; ++x) { + const uint32_t pixel = *(bitmap_in++); + uint16_t out_pixel = ((pixel >> 8) & 0xf800) | + ((pixel >> 5) & 0x07e0) | + ((pixel >> 3) & 0x001f); + *(bitmap16++) = out_pixel; + } + } + + image.data = reinterpret_cast<char*>(orig_bitmap16); + image.red_mask = 0xf800; + image.green_mask = 0x07e0; + image.blue_mask = 0x001f; + + XPutImage(display, pixmap, static_cast<GC>(pixmap_gc), &image, + 0, 0 /* source x, y */, 0, 0 /* dest x, y */, + width, height); + free(orig_bitmap16); + } else { + CHECK(false) << "Sorry, we don't support your visual depth without " + "Xrender support (depth:" << depth + << " bpp:" << pixmap_bpp << ")"; + } +} + +void FreePicture(Display* display, XID picture) { + XRenderFreePicture(display, picture); +} + +void FreePixmap(Display* display, XID pixmap) { + XFreePixmap(display, pixmap); +} + +// Called on BACKGROUND_X11 thread. +Display* GetSecondaryDisplay() { + static Display* display = NULL; + if (!display) { + display = XOpenDisplay(NULL); + CHECK(display); + } + + return display; +} + +// Called on BACKGROUND_X11 thread. +bool GetWindowGeometry(int* x, int* y, unsigned* width, unsigned* height, + XID window) { + Window root_window, child_window; + unsigned border_width, depth; + int temp; + + if (!XGetGeometry(GetSecondaryDisplay(), window, &root_window, &temp, &temp, + width, height, &border_width, &depth)) + return false; + if (!XTranslateCoordinates(GetSecondaryDisplay(), window, root_window, + 0, 0 /* input x, y */, x, y /* output x, y */, + &child_window)) + return false; + + return true; +} + +// Called on BACKGROUND_X11 thread. +bool GetWindowParent(XID* parent_window, bool* parent_is_root, XID window) { + XID root_window, *children; + unsigned num_children; + + Status s = XQueryTree(GetSecondaryDisplay(), window, &root_window, + parent_window, &children, &num_children); + if (!s) + return false; + + if (children) + XFree(children); + + *parent_is_root = root_window == *parent_window; + return true; +} + +bool GetWindowManagerName(std::string* wm_name) { + DCHECK(wm_name); + int wm_window = 0; + if (!x11_util::GetIntProperty(x11_util::GetX11RootWindow(), + "_NET_SUPPORTING_WM_CHECK", + &wm_window)) { + return false; + } + + // It's possible that a window manager started earlier in this X session left + // a stale _NET_SUPPORTING_WM_CHECK property when it was replaced by a + // non-EWMH window manager, so we trap errors in the following requests to + // avoid crashes (issue 23860). + + // EWMH requires the supporting-WM window to also have a + // _NET_SUPPORTING_WM_CHECK property pointing to itself (to avoid a stale + // property referencing an ID that's been recycled for another window), so we + // check that too. + gdk_error_trap_push(); + int wm_window_property = 0; + bool result = x11_util::GetIntProperty( + wm_window, "_NET_SUPPORTING_WM_CHECK", &wm_window_property); + gdk_flush(); + bool got_error = gdk_error_trap_pop(); + if (got_error || !result || wm_window_property != wm_window) + return false; + + gdk_error_trap_push(); + result = x11_util::GetStringProperty( + static_cast<XID>(wm_window), "_NET_WM_NAME", wm_name); + gdk_flush(); + got_error = gdk_error_trap_pop(); + return !got_error && result; +} + +static cairo_status_t SnapshotCallback( + void *closure, const unsigned char *data, unsigned int length) { + std::vector<unsigned char>* png_representation = + static_cast<std::vector<unsigned char>*>(closure); + + size_t old_size = png_representation->size(); + png_representation->resize(old_size + length); + memcpy(&(*png_representation)[old_size], data, length); + return CAIRO_STATUS_SUCCESS; +} + +void GrabWindowSnapshot(GtkWindow* gtk_window, + std::vector<unsigned char>* png_representation) { + GdkWindow* gdk_window = GTK_WIDGET(gtk_window)->window; + Display* display = GDK_WINDOW_XDISPLAY(gdk_window); + XID win = GDK_WINDOW_XID(gdk_window); + XWindowAttributes attr; + if (XGetWindowAttributes(display, win, &attr) != 0) { + LOG(ERROR) << "Couldn't get window attributes"; + return; + } + XImage* image = XGetImage( + display, win, 0, 0, attr.width, attr.height, AllPlanes, ZPixmap); + if (!image) { + LOG(ERROR) << "Couldn't get image"; + return; + } + if (image->depth != 24) { + LOG(ERROR)<< "Unsupported image depth " << image->depth; + return; + } + cairo_surface_t* surface = + cairo_image_surface_create_for_data( + reinterpret_cast<unsigned char*>(image->data), + CAIRO_FORMAT_RGB24, + image->width, + image->height, + image->bytes_per_line); + + if (!surface) { + LOG(ERROR) << "Unable to create Cairo surface from XImage data"; + return; + } + cairo_surface_write_to_png_stream( + surface, SnapshotCallback, png_representation); + cairo_surface_destroy(surface); +} + +bool ChangeWindowDesktop(XID window, XID destination) { + int desktop; + if (!GetIntProperty(destination, "_NET_WM_DESKTOP", &desktop)) + return false; + + XEvent event; + event.xclient.type = ClientMessage; + event.xclient.window = window; + event.xclient.message_type = gdk_x11_get_xatom_by_name_for_display( + gdk_display_get_default(), "_NET_WM_DESKTOP"); + event.xclient.format = 32; + event.xclient.data.l[0] = desktop; + event.xclient.data.l[1] = 1; // source indication + + int result = XSendEvent(GetXDisplay(), GetX11RootWindow(), False, + SubstructureNotifyMask, &event); + return result == Success; +} + +} // namespace x11_util diff --git a/app/x11_util.h b/app/x11_util.h new file mode 100644 index 0000000..1c8685f1 --- /dev/null +++ b/app/x11_util.h @@ -0,0 +1,173 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef APP_X11_UTIL_H_ +#define APP_X11_UTIL_H_ + +// This file declares utility functions for X11 (Linux only). +// +// These functions do not require the Xlib headers to be included (which is why +// we use a void* for Visual*). The Xlib headers are highly polluting so we try +// hard to limit their spread into the rest of the code. + +#include <string> +#include <vector> + +#include "base/task.h" +#include "gfx/rect.h" + +typedef struct _GdkDrawable GdkWindow; +typedef struct _GtkWidget GtkWidget; +typedef struct _GtkWindow GtkWindow; +typedef unsigned long XID; +typedef unsigned long XSharedMemoryId; // ShmSeg in the X headers. +typedef struct _XDisplay Display; + +namespace base { +class Thread; +} + +namespace gfx { +class Size; +} + +namespace x11_util { + +// These functions use the GDK default display and this /must/ be called from +// the UI thread. Thus, they don't support multiple displays. + +// These functions cache their results --------------------------------- + +// Check if there's an open connection to an X server. +bool XDisplayExists(); +// Return an X11 connection for the current, primary display. +Display* GetXDisplay(); + +// X shared memory comes in three flavors: +// 1) No SHM support, +// 2) SHM putimage, +// 3) SHM pixmaps + putimage. +enum SharedMemorySupport { + SHARED_MEMORY_NONE, + SHARED_MEMORY_PUTIMAGE, + SHARED_MEMORY_PIXMAP +}; +// Return the shared memory type of our X connection. +SharedMemorySupport QuerySharedMemorySupport(Display* dpy); + +// Return true iff the display supports Xrender +bool QueryRenderSupport(Display* dpy); + +// Return the default screen number for the display +int GetDefaultScreen(Display* display); + +// These functions do not cache their results -------------------------- + +// Get the X window id for the default root window +XID GetX11RootWindow(); +// Get the X window id for the given GTK widget. +XID GetX11WindowFromGtkWidget(GtkWidget* widget); +XID GetX11WindowFromGdkWindow(GdkWindow* window); +// Get a Visual from the given widget. Since we don't include the Xlib +// headers, this is returned as a void*. +void* GetVisualFromGtkWidget(GtkWidget* widget); +// Return the number of bits-per-pixel for a pixmap of the given depth +int BitsPerPixelForPixmapDepth(Display* display, int depth); +// Returns true if |window| is visible. +bool IsWindowVisible(XID window); +// Returns the bounds of |window|. +bool GetWindowRect(XID window, gfx::Rect* rect); +// Get the value of an int or string property. On success, true is returned and +// the value is stored in |value|. +bool GetIntProperty(XID window, const std::string& property_name, int* value); +bool GetStringProperty( + XID window, const std::string& property_name, std::string* value); + +// Get |window|'s parent window, or None if |window| is the root window. +XID GetParentWindow(XID window); + +// Walk up |window|'s hierarchy until we find a direct child of |root|. +XID GetHighestAncestorWindow(XID window, XID root); + +// Implementers of this interface receive a notification for every X window of +// the main display. +class EnumerateWindowsDelegate { + public: + // |xid| is the X Window ID of the enumerated window. Return true to stop + // further iteration. + virtual bool ShouldStopIterating(XID xid) = 0; + + protected: + virtual ~EnumerateWindowsDelegate() {} +}; + +// Enumerates all windows in the current display. Will recurse into child +// windows up to a depth of |max_depth|. +bool EnumerateAllWindows(EnumerateWindowsDelegate* delegate, int max_depth); + +// Returns a list of top-level windows in top-to-bottom stacking order. +bool GetXWindowStack(std::vector<XID>* windows); + +// Restack a window in relation to one of its siblings. If |above| is true, +// |window| will be stacked directly above |sibling|; otherwise it will stacked +// directly below it. Both windows must be immediate children of the same +// window. +void RestackWindow(XID window, XID sibling, bool above); + +// Return a handle to a X ShmSeg. |shared_memory_key| is a SysV +// IPC key. The shared memory region must contain 32-bit pixels. +XSharedMemoryId AttachSharedMemory(Display* display, int shared_memory_support); +void DetachSharedMemory(Display* display, XSharedMemoryId shmseg); + +// Return a handle to an XRender picture where |pixmap| is a handle to a +// pixmap containing Skia ARGB data. +XID CreatePictureFromSkiaPixmap(Display* display, XID pixmap); + +// Draws ARGB data on the given pixmap using the given GC, converting to the +// server side visual depth as needed. Destination is assumed to be the same +// dimensions as |data| or larger. |data| is also assumed to be in row order +// with each line being exactly |width| * 4 bytes long. +void PutARGBImage(Display* display, void* visual, int depth, XID pixmap, + void* pixmap_gc, const uint8* data, int width, int height); + +void FreePicture(Display* display, XID picture); +void FreePixmap(Display* display, XID pixmap); + +// These functions are for performing X opertions outside of the UI thread. + +// Return the Display for the secondary X connection. We keep a second +// connection around for making X requests outside of the UI thread. +// This function may only be called from the BACKGROUND_X11 thread. +Display* GetSecondaryDisplay(); + +// Since one cannot include both WebKit header and Xlib headers in the same +// file (due to collisions), we wrap all the Xlib functions that we need here. +// These functions must be called on the BACKGROUND_X11 thread since they +// reference GetSecondaryDisplay(). + +// Get the position of the given window in screen coordinates as well as its +// current size. +bool GetWindowGeometry(int* x, int* y, unsigned* width, unsigned* height, + XID window); + +// Find the immediate parent of an X window. +// +// parent_window: (output) the parent window of |window|, or 0. +// parent_is_root: (output) true iff the parent of |window| is the root window. +bool GetWindowParent(XID* parent_window, bool* parent_is_root, XID window); + +// Get the window manager name. +bool GetWindowManagerName(std::string* name); + +// Grabs a snapshot of the designated window and stores a PNG representation +// into a byte vector. +void GrabWindowSnapshot(GtkWindow* gdk_window, + std::vector<unsigned char>* png_representation); + +// Change desktop for |window| to the desktop of |destination| window. +bool ChangeWindowDesktop(XID window, XID destination); + +} // namespace x11_util + +#endif // APP_X11_UTIL_H_ diff --git a/app/x11_util_internal.h b/app/x11_util_internal.h new file mode 100644 index 0000000..81f2820 --- /dev/null +++ b/app/x11_util_internal.h @@ -0,0 +1,35 @@ +// Copyright (c) 2009 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef APP_X11_UTIL_INTERNAL_H_ +#define APP_X11_UTIL_INTERNAL_H_ + +// This file declares utility functions for X11 (Linux only). +// +// These functions require the inclusion of the Xlib headers. Since the Xlib +// headers pollute so much of the namespace, this should only be included +// when needed. + +extern "C" { +#include <X11/Xatom.h> +#include <X11/Xlib.h> +#include <X11/extensions/XShm.h> +#include <X11/extensions/Xrender.h> +} + +namespace x11_util { + // NOTE: these function caches the results and must be called from the UI + // thread. + + // Get the XRENDER format id for ARGB32 (Skia's format). + // + // NOTE:Currently this don't support multiple screens/displays. + XRenderPictFormat* GetRenderARGB32Format(Display* dpy); + + // Get the XRENDER format id for the default visual on the first screen. This + // is the format which our GTK window will have. + XRenderPictFormat* GetRenderVisualFormat(Display* dpy, Visual* visual); +}; + +#endif // APP_X11_UTIL_INTERNAL_H_ |