chrome/browser/ui/libgtk2ui/gtk2_util.cc

   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 #include "chrome/browser/ui/libgtk2ui/gtk2_util.h"
   6
   7 #include <gtk/gtk.h>
   8
   9 #include "base/command_line.h"
  10 #include "base/environment.h"
  11 #include "base/memory/scoped_ptr.h"
  12 #include "ui/base/accelerators/accelerator.h"
  13 #include "ui/events/event_constants.h"
  14 #include "ui/events/keycodes/keyboard_code_conversion_x.h"
  15 #include "ui/gfx/size.h"
  16
  17 namespace {
  18
  19 void CommonInitFromCommandLine(const CommandLine& command_line,
  20                                void (*init_func)(gint*, gchar***)) {
  21   const std::vector<std::string>& args = command_line.argv();
  22   int argc = args.size();
  23   scoped_ptr<char *[]> argv(new char *[argc + 1]);
  24   for (size_t i = 0; i < args.size(); ++i) {
  25     // TODO(piman@google.com): can gtk_init modify argv? Just being safe
  26     // here.
  27     argv[i] = strdup(args[i].c_str());
  28   }
  29   argv[argc] = NULL;
  30   char **argv_pointer = argv.get();
  31
  32   init_func(&argc, &argv_pointer);
  33   for (size_t i = 0; i < args.size(); ++i) {
  34     free(argv[i]);
  35   }
  36 }
  37
  38 }  // namespace
  39
  40 namespace libgtk2ui {
  41
  42 void GtkInitFromCommandLine(const CommandLine& command_line) {
  43   CommonInitFromCommandLine(command_line, gtk_init);
  44 }
  45
  46 // TODO(erg): This method was copied out of shell_integration_linux.cc. Because
  47 // of how this library is structured as a stand alone .so, we can't call code
  48 // from browser and above.
  49 std::string GetDesktopName(base::Environment* env) {
  50 #if defined(GOOGLE_CHROME_BUILD)
  51   return "google-chrome.desktop";
  52 #else  // CHROMIUM_BUILD
  53   // Allow $CHROME_DESKTOP to override the built-in value, so that development
  54   // versions can set themselves as the default without interfering with
  55   // non-official, packaged versions using the built-in value.
  56   std::string name;
  57   if (env->GetVar("CHROME_DESKTOP", &name) && !name.empty())
  58     return name;
  59   return "chromium-browser.desktop";
  60 #endif
  61 }
  62
  63 void SetAlwaysShowImage(GtkWidget* image_menu_item) {
  64   gtk_image_menu_item_set_always_show_image(
  65       GTK_IMAGE_MENU_ITEM(image_menu_item), TRUE);
  66 }
  67
  68 guint GetGdkKeyCodeForAccelerator(const ui::Accelerator& accelerator) {
  69   // The second parameter is false because accelerator keys are expressed in
  70   // terms of the non-shift-modified key.
  71   return XKeysymForWindowsKeyCode(accelerator.key_code(), false);
  72 }
  73
  74 GdkModifierType GetGdkModifierForAccelerator(
  75     const ui::Accelerator& accelerator) {
  76   int event_flag = accelerator.modifiers();
  77   int modifier = 0;
  78   if (event_flag & ui::EF_SHIFT_DOWN)
  79     modifier |= GDK_SHIFT_MASK;
  80   if (event_flag & ui::EF_CONTROL_DOWN)
  81     modifier |= GDK_CONTROL_MASK;
  82   if (event_flag & ui::EF_ALT_DOWN)
  83     modifier |= GDK_MOD1_MASK;
  84   return static_cast<GdkModifierType>(modifier);
  85 }
  86
  87 int EventFlagsFromGdkState(guint state) {
  88   int flags = ui::EF_NONE;
  89   flags |= (state & GDK_LOCK_MASK) ? ui::EF_CAPS_LOCK_DOWN : ui::EF_NONE;
  90   flags |= (state & GDK_CONTROL_MASK) ? ui::EF_CONTROL_DOWN : ui::EF_NONE;
  91   flags |= (state & GDK_SHIFT_MASK) ? ui::EF_SHIFT_DOWN : ui::EF_NONE;
  92   flags |= (state & GDK_MOD1_MASK) ? ui::EF_ALT_DOWN : ui::EF_NONE;
  93   flags |= (state & GDK_BUTTON1_MASK) ? ui::EF_LEFT_MOUSE_BUTTON : ui::EF_NONE;
  94   flags |=
  95       (state & GDK_BUTTON2_MASK) ? ui::EF_MIDDLE_MOUSE_BUTTON : ui::EF_NONE;
  96   flags |= (state & GDK_BUTTON3_MASK) ? ui::EF_RIGHT_MOUSE_BUTTON : ui::EF_NONE;
  97   return flags;
  98 }
  99
 100 }  // namespace libgtk2ui