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atom_api_system_preferences_win.cc
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atom_api_system_preferences_win.cc
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// Copyright (c) 2014 GitHub, Inc.
// Use of this source code is governed by the MIT license that can be
// found in the LICENSE file.
#include <dwmapi.h>
#include <iomanip>
#include "atom/browser/api/atom_api_system_preferences.h"
#include "atom/common/color_util.h"
#include "base/win/wrapped_window_proc.h"
#include "ui/base/win/shell.h"
#include "ui/gfx/color_utils.h"
#include "ui/gfx/win/hwnd_util.h"
namespace atom {
namespace {
const wchar_t kSystemPreferencesWindowClass[] =
L"Electron_SystemPreferencesHostWindow";
bool g_is_high_contract_color_scheme = false;
bool g_is_high_contract_color_scheme_initialized = false;
void UpdateHighContrastColorScheme() {
HIGHCONTRAST high_contrast = {0};
high_contrast.cbSize = sizeof(HIGHCONTRAST);
g_is_high_contract_color_scheme =
SystemParametersInfo(SPI_GETHIGHCONTRAST, 0, &high_contrast, 0) &&
((high_contrast.dwFlags & HCF_HIGHCONTRASTON) != 0);
g_is_high_contract_color_scheme_initialized = true;
}
} // namespace
namespace api {
bool SystemPreferences::IsAeroGlassEnabled() {
return ui::win::IsAeroGlassEnabled();
}
bool SystemPreferences::IsHighContrastColorScheme() {
if (!g_is_high_contract_color_scheme_initialized)
UpdateHighContrastColorScheme();
return g_is_high_contract_color_scheme;
}
std::string hexColorDWORDToRGBA(DWORD color) {
DWORD rgba = color << 8 | color >> 24;
std::ostringstream stream;
stream << std::hex << std::setw(8) << std::setfill('0') << rgba;
return stream.str();
}
std::string SystemPreferences::GetAccentColor() {
DWORD color = 0;
BOOL opaque = FALSE;
if (FAILED(DwmGetColorizationColor(&color, &opaque))) {
return "";
}
return hexColorDWORDToRGBA(color);
}
std::string SystemPreferences::GetColor(const std::string& color,
mate::Arguments* args) {
int id;
if (color == "3d-dark-shadow") {
id = COLOR_3DDKSHADOW;
} else if (color == "3d-face") {
id = COLOR_3DFACE;
} else if (color == "3d-highlight") {
id = COLOR_3DHIGHLIGHT;
} else if (color == "3d-light") {
id = COLOR_3DLIGHT;
} else if (color == "3d-shadow") {
id = COLOR_3DSHADOW;
} else if (color == "active-border") {
id = COLOR_ACTIVEBORDER;
} else if (color == "active-caption") {
id = COLOR_ACTIVECAPTION;
} else if (color == "active-caption-gradient") {
id = COLOR_GRADIENTACTIVECAPTION;
} else if (color == "app-workspace") {
id = COLOR_APPWORKSPACE;
} else if (color == "button-text") {
id = COLOR_BTNTEXT;
} else if (color == "caption-text") {
id = COLOR_CAPTIONTEXT;
} else if (color == "desktop") {
id = COLOR_DESKTOP;
} else if (color == "disabled-text") {
id = COLOR_GRAYTEXT;
} else if (color == "highlight") {
id = COLOR_HIGHLIGHT;
} else if (color == "highlight-text") {
id = COLOR_HIGHLIGHTTEXT;
} else if (color == "hotlight") {
id = COLOR_HOTLIGHT;
} else if (color == "inactive-border") {
id = COLOR_INACTIVEBORDER;
} else if (color == "inactive-caption") {
id = COLOR_INACTIVECAPTION;
} else if (color == "inactive-caption-gradient") {
id = COLOR_GRADIENTINACTIVECAPTION;
} else if (color == "inactive-caption-text") {
id = COLOR_INACTIVECAPTIONTEXT;
} else if (color == "info-background") {
id = COLOR_INFOBK;
} else if (color == "info-text") {
id = COLOR_INFOTEXT;
} else if (color == "menu") {
id = COLOR_MENU;
} else if (color == "menu-highlight") {
id = COLOR_MENUHILIGHT;
} else if (color == "menubar") {
id = COLOR_MENUBAR;
} else if (color == "menu-text") {
id = COLOR_MENUTEXT;
} else if (color == "scrollbar") {
id = COLOR_SCROLLBAR;
} else if (color == "window") {
id = COLOR_WINDOW;
} else if (color == "window-frame") {
id = COLOR_WINDOWFRAME;
} else if (color == "window-text") {
id = COLOR_WINDOWTEXT;
} else {
args->ThrowError("Unknown color: " + color);
return "";
}
return ToRGBHex(color_utils::GetSysSkColor(id));
}
void SystemPreferences::InitializeWindow() {
invertered_color_scheme_ = IsInvertedColorScheme();
high_contrast_color_scheme_ = IsHighContrastColorScheme();
// Wait until app is ready before creating sys color listener
// Creating this listener before the app is ready causes global shortcuts
// to not fire
if (Browser::Get()->is_ready())
color_change_listener_.reset(new gfx::ScopedSysColorChangeListener(this));
else
Browser::Get()->AddObserver(this);
WNDCLASSEX window_class;
base::win::InitializeWindowClass(
kSystemPreferencesWindowClass,
&base::win::WrappedWindowProc<SystemPreferences::WndProcStatic>, 0, 0, 0,
NULL, NULL, NULL, NULL, NULL, &window_class);
instance_ = window_class.hInstance;
atom_ = RegisterClassEx(&window_class);
// Create an offscreen window for receiving broadcast messages for the system
// colorization color. Create a hidden WS_POPUP window instead of an
// HWND_MESSAGE window, because only top-level windows such as popups can
// receive broadcast messages like "WM_DWMCOLORIZATIONCOLORCHANGED".
window_ = CreateWindow(MAKEINTATOM(atom_), 0, WS_POPUP, 0, 0, 0, 0, 0, 0,
instance_, 0);
gfx::CheckWindowCreated(window_);
gfx::SetWindowUserData(window_, this);
}
LRESULT CALLBACK SystemPreferences::WndProcStatic(HWND hwnd,
UINT message,
WPARAM wparam,
LPARAM lparam) {
SystemPreferences* msg_wnd = reinterpret_cast<SystemPreferences*>(
GetWindowLongPtr(hwnd, GWLP_USERDATA));
if (msg_wnd)
return msg_wnd->WndProc(hwnd, message, wparam, lparam);
else
return ::DefWindowProc(hwnd, message, wparam, lparam);
}
LRESULT CALLBACK SystemPreferences::WndProc(HWND hwnd,
UINT message,
WPARAM wparam,
LPARAM lparam) {
if (message == WM_DWMCOLORIZATIONCOLORCHANGED) {
DWORD new_color = (DWORD)wparam;
std::string new_color_string = hexColorDWORDToRGBA(new_color);
if (new_color_string != current_color_) {
Emit("accent-color-changed", hexColorDWORDToRGBA(new_color));
current_color_ = new_color_string;
}
} else if (message == WM_SYSCOLORCHANGE ||
(message == WM_SETTINGCHANGE && wparam == SPI_SETHIGHCONTRAST)) {
UpdateHighContrastColorScheme();
}
return ::DefWindowProc(hwnd, message, wparam, lparam);
}
void SystemPreferences::OnSysColorChange() {
bool new_invertered_color_scheme = IsInvertedColorScheme();
if (new_invertered_color_scheme != invertered_color_scheme_) {
invertered_color_scheme_ = new_invertered_color_scheme;
Emit("inverted-color-scheme-changed", new_invertered_color_scheme);
}
bool new_high_contrast_color_scheme = IsHighContrastColorScheme();
if (new_high_contrast_color_scheme != high_contrast_color_scheme_) {
high_contrast_color_scheme_ = new_high_contrast_color_scheme;
Emit("high-contrast-color-scheme-changed", new_high_contrast_color_scheme);
}
Emit("color-changed");
}
void SystemPreferences::OnFinishLaunching(
const base::DictionaryValue& launch_info) {
color_change_listener_.reset(new gfx::ScopedSysColorChangeListener(this));
}
} // namespace api
} // namespace atom