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// Copyright (c) 2011 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/glue/webcursor.h"
#include <gdk/gdk.h>
#include <gtk/gtk.h>
#include "base/logging.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebCursorInfo.h"
#include "ui/gfx/gtk_util.h"
using WebKit::WebCursorInfo;
namespace {
// webcursor_gtk_data.h is taken directly from WebKit's CursorGtk.h.
#include "webkit/glue/webcursor_gtk_data.h"
// This helper function is taken directly from WebKit's CursorGtk.cpp.
// It attempts to create a custom cursor from the data inlined in
// webcursor_gtk_data.h.
GdkCursor* GetInlineCustomCursor(CustomCursorType type) {
static GdkCursor* CustomCursorsGdk[G_N_ELEMENTS(CustomCursors)];
GdkCursor* cursor = CustomCursorsGdk[type];
if (cursor)
return cursor;
const CustomCursor& custom = CustomCursors[type];
cursor = gdk_cursor_new_from_name(gdk_display_get_default(), custom.name);
if (!cursor) {
const GdkColor fg = { 0, 0, 0, 0 };
const GdkColor bg = { 65535, 65535, 65535, 65535 };
GdkPixmap* source = gdk_bitmap_create_from_data(NULL, custom.bits,
32, 32);
GdkPixmap* mask = gdk_bitmap_create_from_data(NULL, custom.mask_bits,
32, 32);
cursor = gdk_cursor_new_from_pixmap(source, mask, &fg, &bg,
custom.hot_x, custom.hot_y);
g_object_unref(source);
g_object_unref(mask);
}
CustomCursorsGdk[type] = cursor;
return cursor;
}
// For GTK 2.16 and beyond, GDK_BLANK_CURSOR is available. Before, we have to
// use a custom cursor.
#if !GTK_CHECK_VERSION(2, 16, 0)
// Get/create a custom cursor which is invisible.
GdkCursor* GetInvisibleCustomCursor() {
static GdkCursor* cursor = NULL;
if (cursor)
return cursor;
const char bits[] = { 0 };
const GdkColor color = { 0, 0, 0, 0 };
GdkPixmap* bitmap = gdk_bitmap_create_from_data(NULL, bits, 1, 1);
cursor = gdk_cursor_new_from_pixmap(bitmap, bitmap, &color, &color, 0, 0);
g_object_unref(bitmap);
return cursor;
}
#endif
} // end anonymous namespace
int WebCursor::GetCursorType() const {
// http://library.gnome.org/devel/gdk/2.12/gdk-Cursors.html has images
// of the default X theme, but beware that the user's cursor theme can
// change everything.
switch (type_) {
case WebCursorInfo::TypePointer:
return GDK_LAST_CURSOR;
case WebCursorInfo::TypeCross:
return GDK_CROSS;
case WebCursorInfo::TypeHand:
return GDK_HAND2;
case WebCursorInfo::TypeIBeam:
return GDK_XTERM;
case WebCursorInfo::TypeWait:
return GDK_WATCH;
case WebCursorInfo::TypeHelp:
return GDK_QUESTION_ARROW;
case WebCursorInfo::TypeEastResize:
return GDK_RIGHT_SIDE;
case WebCursorInfo::TypeNorthResize:
return GDK_TOP_SIDE;
case WebCursorInfo::TypeNorthEastResize:
return GDK_TOP_RIGHT_CORNER;
case WebCursorInfo::TypeNorthWestResize:
return GDK_TOP_LEFT_CORNER;
case WebCursorInfo::TypeSouthResize:
return GDK_BOTTOM_SIDE;
case WebCursorInfo::TypeSouthEastResize:
return GDK_BOTTOM_RIGHT_CORNER;
case WebCursorInfo::TypeSouthWestResize:
return GDK_BOTTOM_LEFT_CORNER;
case WebCursorInfo::TypeWestResize:
return GDK_LEFT_SIDE;
case WebCursorInfo::TypeNorthSouthResize:
return GDK_SB_V_DOUBLE_ARROW;
case WebCursorInfo::TypeEastWestResize:
return GDK_SB_H_DOUBLE_ARROW;
case WebCursorInfo::TypeNorthEastSouthWestResize:
case WebCursorInfo::TypeNorthWestSouthEastResize:
// There isn't really a useful cursor available for these.
NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
case WebCursorInfo::TypeColumnResize:
return GDK_SB_H_DOUBLE_ARROW; // TODO(evanm): is this correct?
case WebCursorInfo::TypeRowResize:
return GDK_SB_V_DOUBLE_ARROW; // TODO(evanm): is this correct?
case WebCursorInfo::TypeMiddlePanning:
return GDK_FLEUR;
case WebCursorInfo::TypeEastPanning:
return GDK_SB_RIGHT_ARROW;
case WebCursorInfo::TypeNorthPanning:
return GDK_SB_UP_ARROW;
case WebCursorInfo::TypeNorthEastPanning:
return GDK_TOP_RIGHT_CORNER;
case WebCursorInfo::TypeNorthWestPanning:
return GDK_TOP_LEFT_CORNER;
case WebCursorInfo::TypeSouthPanning:
return GDK_SB_DOWN_ARROW;
case WebCursorInfo::TypeSouthEastPanning:
return GDK_BOTTOM_RIGHT_CORNER;
case WebCursorInfo::TypeSouthWestPanning:
return GDK_BOTTOM_LEFT_CORNER;
case WebCursorInfo::TypeWestPanning:
return GDK_SB_LEFT_ARROW;
case WebCursorInfo::TypeMove:
return GDK_FLEUR;
case WebCursorInfo::TypeVerticalText:
NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
case WebCursorInfo::TypeCell:
NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
case WebCursorInfo::TypeContextMenu:
NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
case WebCursorInfo::TypeAlias:
NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
case WebCursorInfo::TypeProgress:
return GDK_WATCH;
case WebCursorInfo::TypeNoDrop:
NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
case WebCursorInfo::TypeCopy:
NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
case WebCursorInfo::TypeNone:
// See comment above |GetInvisibleCustomCursor()|.
#if !GTK_CHECK_VERSION(2, 16, 0)
return GDK_CURSOR_IS_PIXMAP;
#else
return GDK_BLANK_CURSOR;
#endif
case WebCursorInfo::TypeNotAllowed:
NOTIMPLEMENTED(); return GDK_LAST_CURSOR;
case WebCursorInfo::TypeZoomIn:
case WebCursorInfo::TypeZoomOut:
case WebCursorInfo::TypeGrab:
case WebCursorInfo::TypeGrabbing:
case WebCursorInfo::TypeCustom:
return GDK_CURSOR_IS_PIXMAP;
}
NOTREACHED();
return GDK_LAST_CURSOR;
}
gfx::NativeCursor WebCursor::GetNativeCursor() {
int type = GetCursorType();
if (type == GDK_CURSOR_IS_PIXMAP)
return GetCustomCursor();
return gfx::GetCursor(type);
}
GdkCursor* WebCursor::GetCustomCursor() {
switch (type_) {
// See comment above |GetInvisibleCustomCursor()|.
#if !GTK_CHECK_VERSION(2, 16, 0)
case WebCursorInfo::TypeNone:
return GetInvisibleCustomCursor();
#endif
case WebCursorInfo::TypeZoomIn:
return GetInlineCustomCursor(CustomCursorZoomIn);
case WebCursorInfo::TypeZoomOut:
return GetInlineCustomCursor(CustomCursorZoomOut);
case WebCursorInfo::TypeGrab:
return GetInlineCustomCursor(CustomCursorGrab);
case WebCursorInfo::TypeGrabbing:
return GetInlineCustomCursor(CustomCursorGrabbing);
}
if (type_ != WebCursorInfo::TypeCustom) {
NOTREACHED();
return NULL;
}
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config,
custom_size_.width(), custom_size_.height());
bitmap.allocPixels();
memcpy(bitmap.getAddr32(0, 0), custom_data_.data(), custom_data_.size());
GdkPixbuf* pixbuf = gfx::GdkPixbufFromSkBitmap(&bitmap);
GdkCursor* cursor = gdk_cursor_new_from_pixbuf(gdk_display_get_default(),
pixbuf,
hotspot_.x(),
hotspot_.y());
gdk_pixbuf_unref(pixbuf);
if (unref_)
gdk_cursor_unref(unref_);
unref_ = cursor;
return cursor;
}
void WebCursor::InitPlatformData() {
unref_ = NULL;
return;
}
bool WebCursor::SerializePlatformData(Pickle* pickle) const {
return true;
}
bool WebCursor::DeserializePlatformData(const Pickle* pickle, void** iter) {
return true;
}
bool WebCursor::IsPlatformDataEqual(const WebCursor& other) const {
return true;
}
void WebCursor::CleanupPlatformData() {
if (unref_) {
gdk_cursor_unref(unref_);
unref_ = NULL;
}
return;
}
void WebCursor::CopyPlatformData(const WebCursor& other) {
if (other.unref_)
unref_ = gdk_cursor_ref(other.unref_);
return;
}
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