forked from mirrors/gecko-dev
252 lines
7.5 KiB
C++
252 lines
7.5 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include <gtk/gtk.h>
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#include "nsColor.h"
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#include "nsColorPicker.h"
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#include "nsGtkUtils.h"
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#include "nsIWidget.h"
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#include "WidgetUtils.h"
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#include "nsPIDOMWindow.h"
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NS_IMPL_ISUPPORTS(nsColorPicker, nsIColorPicker)
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#if defined(ACTIVATE_GTK3_COLOR_PICKER) && GTK_CHECK_VERSION(3,4,0)
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int nsColorPicker::convertGdkRgbaComponent(gdouble color_component) {
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// GdkRGBA value is in range [0.0..1.0]. We need something in range [0..255]
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return color_component * 255 + 0.5;
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}
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gdouble nsColorPicker::convertToGdkRgbaComponent(int color_component) {
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return color_component / 255.0;
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}
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GdkRGBA nsColorPicker::convertToRgbaColor(nscolor color) {
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GdkRGBA result = { convertToGdkRgbaComponent(NS_GET_R(color)),
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convertToGdkRgbaComponent(NS_GET_G(color)),
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convertToGdkRgbaComponent(NS_GET_B(color)),
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convertToGdkRgbaComponent(NS_GET_A(color)) };
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return result;
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}
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#else
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int nsColorPicker::convertGdkColorComponent(guint16 color_component) {
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// GdkColor value is in range [0..65535]. We need something in range [0..255]
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return (color_component * 255 + 127) / 65535;
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}
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guint16 nsColorPicker::convertToGdkColorComponent(int color_component) {
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return color_component * 65535 / 255;
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}
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GdkColor nsColorPicker::convertToGdkColor(nscolor color) {
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GdkColor result = { 0 /* obsolete, unused 'pixel' value */,
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convertToGdkColorComponent(NS_GET_R(color)),
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convertToGdkColorComponent(NS_GET_G(color)),
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convertToGdkColorComponent(NS_GET_B(color)) };
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return result;
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}
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GtkColorSelection* nsColorPicker::WidgetGetColorSelection(GtkWidget* widget)
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{
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return GTK_COLOR_SELECTION(gtk_color_selection_dialog_get_color_selection(
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GTK_COLOR_SELECTION_DIALOG(widget)));
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}
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#endif
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NS_IMETHODIMP nsColorPicker::Init(mozIDOMWindowProxy *aParent,
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const nsAString& title,
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const nsAString& initialColor)
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{
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auto* parent = nsPIDOMWindowOuter::From(aParent);
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mParentWidget = mozilla::widget::WidgetUtils::DOMWindowToWidget(parent);
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mTitle = title;
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mInitialColor = initialColor;
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return NS_OK;
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}
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NS_IMETHODIMP nsColorPicker::Open(nsIColorPickerShownCallback *aColorPickerShownCallback)
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{
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// Input color string should be 7 length (i.e. a string representing a valid
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// simple color)
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if (mInitialColor.Length() != 7) {
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return NS_ERROR_FAILURE;
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}
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const nsAString& withoutHash = StringTail(mInitialColor, 6);
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nscolor color;
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if (!NS_HexToRGBA(withoutHash, nsHexColorType::NoAlpha, &color)) {
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return NS_ERROR_FAILURE;
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}
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if (mCallback) {
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// It means Open has already been called: this is not allowed
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NS_WARNING("mCallback is already set. Open called twice?");
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return NS_ERROR_FAILURE;
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}
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mCallback = aColorPickerShownCallback;
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nsCString title;
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title.Adopt(ToNewUTF8String(mTitle));
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GtkWindow *parent_window = GTK_WINDOW(mParentWidget->GetNativeData(NS_NATIVE_SHELLWIDGET));
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#if defined(ACTIVATE_GTK3_COLOR_PICKER) && GTK_CHECK_VERSION(3,4,0)
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GtkWidget* color_chooser = gtk_color_chooser_dialog_new(title, parent_window);
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if (parent_window) {
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gtk_window_set_destroy_with_parent(GTK_WINDOW(color_chooser), TRUE);
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}
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gtk_color_chooser_set_use_alpha(GTK_COLOR_CHOOSER(color_chooser), FALSE);
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GdkRGBA color_rgba = convertToRgbaColor(color);
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gtk_color_chooser_set_rgba(GTK_COLOR_CHOOSER(color_chooser),
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&color_rgba);
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g_signal_connect(GTK_COLOR_CHOOSER(color_chooser), "color-activated",
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G_CALLBACK(OnColorChanged), this);
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#else
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GtkWidget *color_chooser = gtk_color_selection_dialog_new(title.get());
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if (parent_window) {
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GtkWindow *window = GTK_WINDOW(color_chooser);
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gtk_window_set_transient_for(window, parent_window);
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gtk_window_set_destroy_with_parent(window, TRUE);
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}
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GdkColor color_gdk = convertToGdkColor(color);
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gtk_color_selection_set_current_color(WidgetGetColorSelection(color_chooser),
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&color_gdk);
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g_signal_connect(WidgetGetColorSelection(color_chooser), "color-changed",
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G_CALLBACK(OnColorChanged), this);
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#endif
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NS_ADDREF_THIS();
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g_signal_connect(color_chooser, "response", G_CALLBACK(OnResponse), this);
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g_signal_connect(color_chooser, "destroy", G_CALLBACK(OnDestroy), this);
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gtk_widget_show(color_chooser);
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return NS_OK;
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}
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#if defined(ACTIVATE_GTK3_COLOR_PICKER) && GTK_CHECK_VERSION(3,4,0)
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/* static */ void
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nsColorPicker::OnColorChanged(GtkColorChooser* color_chooser, GdkRGBA* color,
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gpointer user_data)
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{
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static_cast<nsColorPicker*>(user_data)->Update(color);
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}
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void
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nsColorPicker::Update(GdkRGBA* color)
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{
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SetColor(color);
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if (mCallback) {
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mCallback->Update(mColor);
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}
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}
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void nsColorPicker::SetColor(const GdkRGBA* color)
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{
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mColor.Assign('#');
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mColor += ToHexString(convertGdkRgbaComponent(color->red));
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mColor += ToHexString(convertGdkRgbaComponent(color->green));
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mColor += ToHexString(convertGdkRgbaComponent(color->blue));
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}
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#else
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/* static */ void
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nsColorPicker::OnColorChanged(GtkColorSelection* colorselection,
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gpointer user_data)
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{
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static_cast<nsColorPicker*>(user_data)->Update(colorselection);
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}
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void
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nsColorPicker::Update(GtkColorSelection* colorselection)
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{
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ReadValueFromColorSelection(colorselection);
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if (mCallback) {
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mCallback->Update(mColor);
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}
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}
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void nsColorPicker::ReadValueFromColorSelection(GtkColorSelection* colorselection)
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{
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GdkColor rgba;
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gtk_color_selection_get_current_color(colorselection, &rgba);
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mColor.Assign('#');
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mColor += ToHexString(convertGdkColorComponent(rgba.red));
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mColor += ToHexString(convertGdkColorComponent(rgba.green));
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mColor += ToHexString(convertGdkColorComponent(rgba.blue));
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}
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#endif
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/* static */ void
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nsColorPicker::OnResponse(GtkWidget* color_chooser, gint response_id,
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gpointer user_data)
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{
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static_cast<nsColorPicker*>(user_data)->
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Done(color_chooser, response_id);
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}
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/* static */ void
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nsColorPicker::OnDestroy(GtkWidget* color_chooser, gpointer user_data)
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{
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static_cast<nsColorPicker*>(user_data)->
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Done(color_chooser, GTK_RESPONSE_CANCEL);
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}
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void
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nsColorPicker::Done(GtkWidget* color_chooser, gint response)
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{
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switch (response) {
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case GTK_RESPONSE_OK:
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case GTK_RESPONSE_ACCEPT:
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#if defined(ACTIVATE_GTK3_COLOR_PICKER) && GTK_CHECK_VERSION(3,4,0)
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GdkRGBA color;
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gtk_color_chooser_get_rgba(GTK_COLOR_CHOOSER(color_chooser), &color);
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SetColor(&color);
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#else
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ReadValueFromColorSelection(WidgetGetColorSelection(color_chooser));
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#endif
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break;
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case GTK_RESPONSE_CANCEL:
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case GTK_RESPONSE_CLOSE:
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case GTK_RESPONSE_DELETE_EVENT:
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mColor = mInitialColor;
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break;
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default:
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NS_WARNING("Unexpected response");
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break;
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}
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// A "response" signal won't be sent again but "destroy" will be.
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g_signal_handlers_disconnect_by_func(color_chooser,
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FuncToGpointer(OnDestroy), this);
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gtk_widget_destroy(color_chooser);
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if (mCallback) {
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mCallback->Done(mColor);
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mCallback = nullptr;
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}
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NS_RELEASE_THIS();
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}
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nsString nsColorPicker::ToHexString(int n)
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{
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nsString result;
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if (n <= 0x0F) {
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result.Append('0');
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}
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result.AppendInt(n, 16);
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return result;
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}
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