199 lines
7.7 KiB
C++
199 lines
7.7 KiB
C++
// Copyright (c) 2015 GitHub, Inc.
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// Use of this source code is governed by the MIT license that can be
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// found in the LICENSE file.
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#include "atom/browser/browser.h"
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#include "atom/browser/native_window_views.h"
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#include "content/public/browser/browser_accessibility_state.h"
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namespace atom {
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namespace {
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// Convert Win32 WM_APPCOMMANDS to strings.
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const char* AppCommandToString(int command_id) {
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switch (command_id) {
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case APPCOMMAND_BROWSER_BACKWARD : return "browser-backward";
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case APPCOMMAND_BROWSER_FORWARD : return "browser-forward";
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case APPCOMMAND_BROWSER_REFRESH : return "browser-refresh";
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case APPCOMMAND_BROWSER_STOP : return "browser-stop";
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case APPCOMMAND_BROWSER_SEARCH : return "browser-search";
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case APPCOMMAND_BROWSER_FAVORITES : return "browser-favorites";
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case APPCOMMAND_BROWSER_HOME : return "browser-home";
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case APPCOMMAND_VOLUME_MUTE : return "volume-mute";
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case APPCOMMAND_VOLUME_DOWN : return "volume-down";
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case APPCOMMAND_VOLUME_UP : return "volume-up";
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case APPCOMMAND_MEDIA_NEXTTRACK : return "media-nexttrack";
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case APPCOMMAND_MEDIA_PREVIOUSTRACK : return "media-previoustrack";
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case APPCOMMAND_MEDIA_STOP : return "media-stop";
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case APPCOMMAND_MEDIA_PLAY_PAUSE : return "media-play_pause";
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case APPCOMMAND_LAUNCH_MAIL : return "launch-mail";
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case APPCOMMAND_LAUNCH_MEDIA_SELECT : return "launch-media-select";
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case APPCOMMAND_LAUNCH_APP1 : return "launch-app1";
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case APPCOMMAND_LAUNCH_APP2 : return "launch-app2";
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case APPCOMMAND_BASS_DOWN : return "bass-down";
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case APPCOMMAND_BASS_BOOST : return "bass-boost";
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case APPCOMMAND_BASS_UP : return "bass-up";
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case APPCOMMAND_TREBLE_DOWN : return "treble-down";
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case APPCOMMAND_TREBLE_UP : return "treble-up";
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case APPCOMMAND_MICROPHONE_VOLUME_MUTE : return "microphone-volume-mute";
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case APPCOMMAND_MICROPHONE_VOLUME_DOWN : return "microphone-volume-down";
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case APPCOMMAND_MICROPHONE_VOLUME_UP : return "microphone-volume-up";
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case APPCOMMAND_HELP : return "help";
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case APPCOMMAND_FIND : return "find";
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case APPCOMMAND_NEW : return "new";
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case APPCOMMAND_OPEN : return "open";
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case APPCOMMAND_CLOSE : return "close";
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case APPCOMMAND_SAVE : return "save";
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case APPCOMMAND_PRINT : return "print";
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case APPCOMMAND_UNDO : return "undo";
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case APPCOMMAND_REDO : return "redo";
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case APPCOMMAND_COPY : return "copy";
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case APPCOMMAND_CUT : return "cut";
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case APPCOMMAND_PASTE : return "paste";
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case APPCOMMAND_REPLY_TO_MAIL : return "reply-to-mail";
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case APPCOMMAND_FORWARD_MAIL : return "forward-mail";
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case APPCOMMAND_SEND_MAIL : return "send-mail";
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case APPCOMMAND_SPELL_CHECK : return "spell-check";
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case APPCOMMAND_MIC_ON_OFF_TOGGLE : return "mic-on-off-toggle";
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case APPCOMMAND_CORRECTION_LIST : return "correction-list";
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case APPCOMMAND_MEDIA_PLAY : return "media-play";
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case APPCOMMAND_MEDIA_PAUSE : return "media-pause";
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case APPCOMMAND_MEDIA_RECORD : return "media-record";
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case APPCOMMAND_MEDIA_FAST_FORWARD : return "media-fast-forward";
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case APPCOMMAND_MEDIA_REWIND : return "media-rewind";
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case APPCOMMAND_MEDIA_CHANNEL_UP : return "media-channel-up";
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case APPCOMMAND_MEDIA_CHANNEL_DOWN : return "media-channel-down";
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case APPCOMMAND_DELETE : return "delete";
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case APPCOMMAND_DICTATE_OR_COMMAND_CONTROL_TOGGLE:
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return "dictate-or-command-control-toggle";
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default:
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return "unknown";
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}
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}
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bool IsScreenReaderActive() {
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UINT screenReader = 0;
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SystemParametersInfo(SPI_GETSCREENREADER, 0, &screenReader, 0);
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return screenReader && UiaClientsAreListening();
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}
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} // namespace
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bool NativeWindowViews::ExecuteWindowsCommand(int command_id) {
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std::string command = AppCommandToString(command_id);
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NotifyWindowExecuteWindowsCommand(command);
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return false;
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}
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bool NativeWindowViews::PreHandleMSG(
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UINT message, WPARAM w_param, LPARAM l_param, LRESULT* result) {
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NotifyWindowMessage(message, w_param, l_param);
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switch (message) {
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// Screen readers send WM_GETOBJECT in order to get the accessibility
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// object, so take this opportunity to push Chromium into accessible
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// mode if it isn't already, always say we didn't handle the message
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// because we still want Chromium to handle returning the actual
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// accessibility object.
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case WM_GETOBJECT: {
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if (checked_for_a11y_support_) return false;
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const DWORD obj_id = static_cast<DWORD>(l_param);
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if (obj_id != OBJID_CLIENT) {
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return false;
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}
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if (!IsScreenReaderActive()) {
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return false;
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}
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checked_for_a11y_support_ = true;
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const auto axState = content::BrowserAccessibilityState::GetInstance();
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if (axState && !axState->IsAccessibleBrowser()) {
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axState->OnScreenReaderDetected();
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Browser::Get()->OnAccessibilitySupportChanged();
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}
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return false;
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}
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case WM_COMMAND:
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// Handle thumbar button click message.
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if (HIWORD(w_param) == THBN_CLICKED)
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return taskbar_host_.HandleThumbarButtonEvent(LOWORD(w_param));
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return false;
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case WM_SIZE: {
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consecutive_moves_ = false;
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// Handle window state change.
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HandleSizeEvent(w_param, l_param);
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return false;
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}
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case WM_MOVING: {
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if (!movable_)
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::GetWindowRect(GetAcceleratedWidget(), (LPRECT)l_param);
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return false;
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}
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case WM_MOVE: {
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if (last_window_state_ == ui::SHOW_STATE_NORMAL) {
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if (consecutive_moves_)
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last_normal_bounds_ = last_normal_bounds_candidate_;
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last_normal_bounds_candidate_ = GetBounds();
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consecutive_moves_ = true;
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}
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return false;
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}
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default:
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return false;
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}
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}
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void NativeWindowViews::HandleSizeEvent(WPARAM w_param, LPARAM l_param) {
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// Here we handle the WM_SIZE event in order to figure out what is the current
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// window state and notify the user accordingly.
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switch (w_param) {
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case SIZE_MAXIMIZED:
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last_window_state_ = ui::SHOW_STATE_MAXIMIZED;
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NotifyWindowMaximize();
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break;
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case SIZE_MINIMIZED:
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last_window_state_ = ui::SHOW_STATE_MINIMIZED;
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NotifyWindowMinimize();
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break;
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case SIZE_RESTORED:
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if (last_window_state_ == ui::SHOW_STATE_NORMAL) {
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// Window was resized so we save it's new size.
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last_normal_bounds_ = GetBounds();
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} else {
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switch (last_window_state_) {
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case ui::SHOW_STATE_MAXIMIZED:
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last_window_state_ = ui::SHOW_STATE_NORMAL;
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// When the window is restored we resize it to the previous known
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// normal size.
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SetBounds(last_normal_bounds_, false);
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NotifyWindowUnmaximize();
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break;
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case ui::SHOW_STATE_MINIMIZED:
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if (IsFullscreen()) {
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last_window_state_ = ui::SHOW_STATE_FULLSCREEN;
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NotifyWindowEnterFullScreen();
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} else {
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last_window_state_ = ui::SHOW_STATE_NORMAL;
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// When the window is restored we resize it to the previous known
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// normal size.
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SetBounds(last_normal_bounds_, false);
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NotifyWindowRestore();
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}
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break;
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}
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}
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break;
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}
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}
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} // namespace atom
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