1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/widget/windows/nsColorPicker.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,173 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
1.5 + *
1.6 + * This Source Code Form is subject to the terms of the Mozilla Public
1.7 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.8 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.9 +
1.10 +#include "nsColorPicker.h"
1.11 +
1.12 +#include <shlwapi.h>
1.13 +
1.14 +#include "mozilla/AutoRestore.h"
1.15 +#include "nsIWidget.h"
1.16 +#include "WidgetUtils.h"
1.17 +
1.18 +using namespace mozilla::widget;
1.19 +
1.20 +namespace
1.21 +{
1.22 +// Manages NS_NATIVE_TMP_WINDOW child windows. NS_NATIVE_TMP_WINDOWs are
1.23 +// temporary child windows of mParentWidget created to address RTL issues
1.24 +// in picker dialogs. We are responsible for destroying these.
1.25 +class AutoDestroyTmpWindow
1.26 +{
1.27 +public:
1.28 + explicit AutoDestroyTmpWindow(HWND aTmpWnd) :
1.29 + mWnd(aTmpWnd) {
1.30 + }
1.31 +
1.32 + ~AutoDestroyTmpWindow() {
1.33 + if (mWnd)
1.34 + DestroyWindow(mWnd);
1.35 + }
1.36 +
1.37 + inline HWND get() const { return mWnd; }
1.38 +private:
1.39 + HWND mWnd;
1.40 +};
1.41 +
1.42 +static DWORD ColorStringToRGB(const nsAString& aColor)
1.43 +{
1.44 + DWORD result = 0;
1.45 +
1.46 + for (uint32_t i = 1; i < aColor.Length(); ++i) {
1.47 + result *= 16;
1.48 +
1.49 + char16_t c = aColor[i];
1.50 + if (c >= '0' && c <= '9') {
1.51 + result += c - '0';
1.52 + } else if (c >= 'a' && c <= 'f') {
1.53 + result += 10 + (c - 'a');
1.54 + } else {
1.55 + result += 10 + (c - 'A');
1.56 + }
1.57 + }
1.58 +
1.59 + DWORD r = result & 0x00FF0000;
1.60 + DWORD g = result & 0x0000FF00;
1.61 + DWORD b = result & 0x000000FF;
1.62 +
1.63 + r = r >> 16;
1.64 + b = b << 16;
1.65 +
1.66 + result = r | g | b;
1.67 +
1.68 + return result;
1.69 +}
1.70 +
1.71 +static nsString ToHexString(BYTE n)
1.72 +{
1.73 + nsString result;
1.74 + if (n <= 0x0F) {
1.75 + result.Append('0');
1.76 + }
1.77 + result.AppendInt(n, 16);
1.78 + return result;
1.79 +}
1.80 +
1.81 +
1.82 +static void
1.83 +BGRIntToRGBString(DWORD color, nsAString& aResult)
1.84 +{
1.85 + BYTE r = GetRValue(color);
1.86 + BYTE g = GetGValue(color);
1.87 + BYTE b = GetBValue(color);
1.88 +
1.89 + aResult.AssignLiteral("#");
1.90 + aResult.Append(ToHexString(r));
1.91 + aResult.Append(ToHexString(g));
1.92 + aResult.Append(ToHexString(b));
1.93 +}
1.94 +} // anonymous namespace
1.95 +
1.96 +AsyncColorChooser::AsyncColorChooser(const nsAString& aInitialColor,
1.97 + nsIWidget* aParentWidget,
1.98 + nsIColorPickerShownCallback* aCallback)
1.99 + : mInitialColor(aInitialColor)
1.100 + , mParentWidget(aParentWidget)
1.101 + , mCallback(aCallback)
1.102 +{
1.103 +}
1.104 +
1.105 +NS_IMETHODIMP
1.106 +AsyncColorChooser::Run()
1.107 +{
1.108 + static COLORREF sCustomColors[16] = {0} ;
1.109 +
1.110 + MOZ_ASSERT(NS_IsMainThread(),
1.111 + "Color pickers can only be opened from main thread currently");
1.112 +
1.113 + static bool sColorPickerOpen = false;
1.114 + // Allow only one color picker to be opened at a time, to workaround bug 944737
1.115 + if (!sColorPickerOpen) {
1.116 + mozilla::AutoRestore<bool> autoRestoreColorPickerOpen(sColorPickerOpen);
1.117 + sColorPickerOpen = true;
1.118 +
1.119 + AutoDestroyTmpWindow adtw((HWND) (mParentWidget.get() ?
1.120 + mParentWidget->GetNativeData(NS_NATIVE_TMP_WINDOW) : nullptr));
1.121 +
1.122 + CHOOSECOLOR options;
1.123 + options.lStructSize = sizeof(options);
1.124 + options.hwndOwner = adtw.get();
1.125 + options.Flags = CC_RGBINIT | CC_FULLOPEN;
1.126 + options.rgbResult = ColorStringToRGB(mInitialColor);
1.127 + options.lpCustColors = sCustomColors;
1.128 +
1.129 + if (ChooseColor(&options)) {
1.130 + BGRIntToRGBString(options.rgbResult, mColor);
1.131 + }
1.132 + } else {
1.133 + NS_WARNING("Currently, it's not possible to open more than one color "
1.134 + "picker at a time");
1.135 + mColor = mInitialColor;
1.136 + }
1.137 +
1.138 + if (mCallback) {
1.139 + mCallback->Done(mColor);
1.140 + }
1.141 +
1.142 + return NS_OK;
1.143 +}
1.144 +
1.145 +///////////////////////////////////////////////////////////////////////////////
1.146 +// nsIColorPicker
1.147 +
1.148 +nsColorPicker::nsColorPicker()
1.149 +{
1.150 +}
1.151 +
1.152 +nsColorPicker::~nsColorPicker()
1.153 +{
1.154 +}
1.155 +
1.156 +NS_IMPL_ISUPPORTS(nsColorPicker, nsIColorPicker)
1.157 +
1.158 +NS_IMETHODIMP
1.159 +nsColorPicker::Init(nsIDOMWindow* parent,
1.160 + const nsAString& title,
1.161 + const nsAString& aInitialColor)
1.162 +{
1.163 + NS_PRECONDITION(parent,
1.164 + "Null parent passed to colorpicker, no color picker for you!");
1.165 + mParentWidget = WidgetUtils::DOMWindowToWidget(parent);
1.166 + mInitialColor = aInitialColor;
1.167 + return NS_OK;
1.168 +}
1.169 +
1.170 +NS_IMETHODIMP
1.171 +nsColorPicker::Open(nsIColorPickerShownCallback* aCallback)
1.172 +{
1.173 + NS_ENSURE_ARG(aCallback);
1.174 + nsCOMPtr<nsIRunnable> event = new AsyncColorChooser(mInitialColor, mParentWidget, aCallback);
1.175 + return NS_DispatchToMainThread(event);
1.176 +}
