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// Copyright (c) 2006-2008 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 "webkit/tools/test_shell/webwidget_host.h"
#include <gtk/gtk.h>
#include "base/logging.h"
#include "base/gfx/platform_canvas_linux.h"
#include "base/gfx/platform_device_linux.h"
#include "base/gfx/bitmap_platform_device_linux.h"
#include "webkit/glue/webinputevent.h"
#include "webkit/glue/webwidget.h"
namespace {
// -----------------------------------------------------------------------------
// Callback functions to proxy to host...
gboolean ConfigureEvent(GtkWidget* widget, GdkEventConfigure* config,
gpointer userdata) {
WebWidgetHost* host = (WebWidgetHost* ) userdata;
DLOG(INFO) << " -- Resize " << config->width << " " << config->height;
host->Resize(gfx::Size(config->width, config->height));
return FALSE;
}
gboolean ExposeEvent(GtkWidget* widget, GdkEventExpose* expose,
gpointer userdata) {
WebWidgetHost* host = (WebWidgetHost* ) userdata;
DLOG(INFO) << " -- Expose";
host->Paint();
return FALSE;
}
gboolean DestroyEvent(GtkWidget* widget, GdkEvent* event, gpointer userdata) {
WebWidgetHost* host = (WebWidgetHost* ) userdata;
DLOG(INFO) << " -- Destroy";
host->WindowDestroyed();
return FALSE;
}
gboolean KeyPressEvent(GtkWidget* widget, GdkEventKey* event,
gpointer userdata) {
WebWidgetHost* host = (WebWidgetHost* ) userdata;
DLOG(INFO) << " -- Key press";
WebKeyboardEvent wke(event);
host->webwidget()->HandleInputEvent(&wke);
return FALSE;
}
gboolean FocusIn(GtkWidget* widget, GdkEventFocus* focus, gpointer userdata) {
WebWidgetHost* host = (WebWidgetHost* ) userdata;
host->webwidget()->SetFocus(true);
return FALSE;
}
gboolean FocusOut(GtkWidget* widget, GdkEventFocus* focus, gpointer userdata) {
WebWidgetHost* host = (WebWidgetHost* ) userdata;
host->webwidget()->SetFocus(false);
return FALSE;
}
} // anonymous namespace
// -----------------------------------------------------------------------------
WebWidgetHost* WebWidgetHost::Create(gfx::WindowHandle box,
WebWidgetDelegate* delegate) {
WebWidgetHost* host = new WebWidgetHost();
host->view_ = gtk_drawing_area_new();
gtk_widget_add_events(host->view_, GDK_EXPOSURE_MASK |
GDK_POINTER_MOTION_MASK |
GDK_BUTTON_PRESS_MASK |
GDK_BUTTON_RELEASE_MASK |
GDK_KEY_PRESS_MASK |
GDK_KEY_RELEASE_MASK);
// TODO(agl): set GTK_CAN_FOCUS flag
host->webwidget_ = WebWidget::Create(delegate);
g_object_set_data(G_OBJECT(host->view_), "webwidgethost", host);
g_signal_connect(host->view_, "configure-event", G_CALLBACK(ConfigureEvent), host);
g_signal_connect(host->view_, "expose-event", G_CALLBACK(ExposeEvent), host);
g_signal_connect(host->view_, "destroy-event", G_CALLBACK(DestroyEvent), host);
g_signal_connect(host->view_, "key-press-event", G_CALLBACK(KeyPressEvent), host);
g_signal_connect(host->view_, "focus-in-event", G_CALLBACK(FocusIn), host);
g_signal_connect(host->view_, "focus-out-event", G_CALLBACK(FocusOut), host);
gtk_box_pack_start(GTK_BOX(box), host->view_, TRUE, TRUE, 0);
return host;
}
void WebWidgetHost::DidScrollRect(int dx, int dy, const gfx::Rect& clip_rect) {
NOTIMPLEMENTED();
}
WebWidgetHost* FromWindow(gfx::WindowHandle view) {
const gpointer p = g_object_get_data(G_OBJECT(view), "webwidgethost");
return (WebWidgetHost* ) p;
}
WebWidgetHost::WebWidgetHost()
: view_(NULL),
webwidget_(NULL),
scroll_dx_(0),
scroll_dy_(0),
track_mouse_leave_(false) {
set_painting(false);
}
WebWidgetHost::~WebWidgetHost() {
webwidget_->Close();
webwidget_->Release();
}
void WebWidgetHost::Resize(const gfx::Size &newsize) {
// The pixel buffer backing us is now the wrong size
canvas_.reset();
gtk_widget_set_size_request(GTK_WIDGET(view_), newsize.width(), newsize.height());
webwidget_->Resize(gfx::Size(newsize.width(), newsize.height()));
}
void WebWidgetHost::Paint() {
gint width, height;
gtk_widget_get_size_request(GTK_WIDGET(view_), &width, &height);
gfx::Rect client_rect(width, height);
if (!canvas_.get()) {
paint_rect_ = client_rect;
canvas_.reset(new gfx::PlatformCanvas(width, height, true));
if (!canvas_.get()) {
// memory allocation failed, we can't paint.
LOG(ERROR) << "Failed to allocate memory for " << width << "x" << height;
return;
}
}
// This may result in more invalidation
webwidget_->Layout();
// TODO(agl): scrolling code
// Paint the canvas if necessary. Allow painting to generate extra rects the
// first time we call it. This is necessary because some WebCore rendering
// objects update their layout only when painted.
for (int i = 0; i < 2; ++i) {
paint_rect_ = client_rect.Intersect(paint_rect_);
if (!paint_rect_.IsEmpty()) {
gfx::Rect rect(paint_rect_);
paint_rect_ = gfx::Rect();
DLOG_IF(WARNING, i == 1) << "painting caused additional invalidations";
PaintRect(rect);
}
}
DCHECK(paint_rect_.IsEmpty());
// BitBlit to the X server
gfx::PlatformDeviceLinux &platdev = canvas_->getTopPlatformDevice();
gfx::BitmapPlatformDeviceLinux* const bitdev =
static_cast<gfx::BitmapPlatformDeviceLinux* >(&platdev);
LOG(INFO) << "Using pixel data at " << (void *) gdk_pixbuf_get_pixels(bitdev->pixbuf());
gdk_draw_pixbuf(view_->window, NULL, bitdev->pixbuf(),
0, 0, 0, 0, width, height, GDK_RGB_DITHER_NONE, 0, 0);
gdk_pixbuf_save(bitdev->pixbuf(), "output.png", "png", NULL, NULL);
}
void WebWidgetHost::PaintRect(const gfx::Rect& rect) {
set_painting(true);
webwidget_->Paint(canvas_.get(), rect);
set_painting(false);
}
// -----------------------------------------------------------------------------
// This is called when the GTK window is destroyed. In the Windows code this
// deletes this object. Since it's only test_shell it probably doesn't matter
// that much.
// -----------------------------------------------------------------------------
void WebWidgetHost::WindowDestroyed() {
delete this;
}
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