ui/gfx/gtk_util.h

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_GFX_GTK_UTIL_H_
   6 #define UI_GFX_GTK_UTIL_H_
   7
   8 #include <vector>
   9
  10 #include "base/time.h"
  11 #include "ui/base/ui_export.h"
  12
  13 typedef struct _GdkPixbuf GdkPixbuf;
  14 typedef struct _GdkRegion GdkRegion;
  15 typedef struct _GdkCursor GdkCursor;
  16
  17 class CommandLine;
  18 class SkBitmap;
  19
  20 namespace gfx {
  21
  22 class Rect;
  23
  24 // Call gtk_init() / gdk_init() using the argc and argv from command_line.
  25 // These init functions want an argc and argv that they can mutate; we provide
  26 // those, but leave the original CommandLine unaltered.
  27 UI_EXPORT void GtkInitFromCommandLine(const CommandLine& command_line);
  28 UI_EXPORT void GdkInitFromCommandLine(const CommandLine& command_line);
  29
  30 // Convert and copy a SkBitmap to a GdkPixbuf. NOTE: this uses BGRAToRGBA, so
  31 // it is an expensive operation.  The returned GdkPixbuf will have a refcount of
  32 // 1, and the caller is responsible for unrefing it when done.
  33 UI_EXPORT GdkPixbuf* GdkPixbufFromSkBitmap(const SkBitmap& bitmap);
  34
  35 // Modify the given region by subtracting the given rectangles.
  36 UI_EXPORT void SubtractRectanglesFromRegion(GdkRegion* region,
  37                                             const std::vector<Rect>& cutouts);
  38
  39 // Returns a static instance of a GdkCursor* object, sharable across the
  40 // process. Caller must gdk_cursor_ref() it if they want to assume ownership.
  41 UI_EXPORT GdkCursor* GetCursor(int type);
  42
  43 // Initialize some GTK settings so that our dialogs are consistent.
  44 UI_EXPORT void InitRCStyles();
  45
  46 // Queries GtkSettings for the cursor blink cycle time.  Returns a 0 duration if
  47 // blinking is disabled.
  48 UI_EXPORT base::TimeDelta GetCursorBlinkCycle();
  49
  50 }  // namespace gfx
  51
  52 #endif  // UI_GFX_GTK_UTIL_H_