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gecko-dev
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gecko-dev/widget/gtk/nsLookAndFeel.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:expandtab:shiftwidth=4:tabstop=4:
*/
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// for strtod()
#include <stdlib.h>
#include "nsLookAndFeel.h"
#include <gtk/gtk.h>
#include <gdk/gdk.h>
#include <pango/pango.h>
#include <pango/pango-fontmap.h>
#include <fontconfig/fontconfig.h>
#include "gfxPlatformGtk.h"
#include "nsScreenGtk.h"
#include "gtkdrawing.h"
#include "nsStyleConsts.h"
#include "gfxFontConstants.h"
#include "WidgetUtils.h"
#include <dlfcn.h>
#include "mozilla/gfx/2D.h"
#if MOZ_WIDGET_GTK != 2
#include <cairo-gobject.h>
#include "WidgetStyleCache.h"
#include "prenv.h"
#endif
using mozilla::LookAndFeel;
#define GDK_COLOR_TO_NS_RGB(c) \
((nscolor) NS_RGB(c.red>>8, c.green>>8, c.blue>>8))
#define GDK_RGBA_TO_NS_RGBA(c) \
((nscolor) NS_RGBA((int)((c).red*255), (int)((c).green*255), \
(int)((c).blue*255), (int)((c).alpha*255)))
nsLookAndFeel::nsLookAndFeel()
: nsXPLookAndFeel(),
#if (MOZ_WIDGET_GTK == 2)
mStyle(nullptr),
#endif
mDefaultFontCached(false), mButtonFontCached(false),
mFieldFontCached(false), mMenuFontCached(false)
{
Init();
}
nsLookAndFeel::~nsLookAndFeel()
{
#if (MOZ_WIDGET_GTK == 2)
g_object_unref(mStyle);
#endif
}
#if MOZ_WIDGET_GTK != 2
// Modifies color |*aDest| as if a pattern of color |aSource| was painted with
// CAIRO_OPERATOR_OVER to a surface with color |*aDest|.
static void
ApplyColorOver(const GdkRGBA& aSource, GdkRGBA* aDest) {
gdouble sourceCoef = aSource.alpha;
gdouble destCoef = aDest->alpha * (1.0 - sourceCoef);
gdouble resultAlpha = sourceCoef + destCoef;
if (resultAlpha != 0.0) { // don't divide by zero
destCoef /= resultAlpha;
sourceCoef /= resultAlpha;
aDest->red = sourceCoef * aSource.red + destCoef * aDest->red;
aDest->green = sourceCoef * aSource.green + destCoef * aDest->green;
aDest->blue = sourceCoef * aSource.blue + destCoef * aDest->blue;
aDest->alpha = resultAlpha;
}
}
static void
GetLightAndDarkness(const GdkRGBA& aColor,
double* aLightness, double* aDarkness)
{
double sum = aColor.red + aColor.green + aColor.blue;
*aLightness = sum * aColor.alpha;
*aDarkness = (3.0 - sum) * aColor.alpha;
}
static bool
GetGradientColors(const GValue* aValue,
GdkRGBA* aLightColor, GdkRGBA* aDarkColor)
{
if (!G_TYPE_CHECK_VALUE_TYPE(aValue, CAIRO_GOBJECT_TYPE_PATTERN))
return false;
auto pattern = static_cast<cairo_pattern_t*>(g_value_get_boxed(aValue));
if (!pattern)
return false;
// Just picking the lightest and darkest colors as simple samples rather
// than trying to blend, which could get messy if there are many stops.
if (CAIRO_STATUS_SUCCESS !=
cairo_pattern_get_color_stop_rgba(pattern, 0, nullptr, &aDarkColor->red,
&aDarkColor->green, &aDarkColor->blue,
&aDarkColor->alpha))
return false;
double maxLightness, maxDarkness;
GetLightAndDarkness(*aDarkColor, &maxLightness, &maxDarkness);
*aLightColor = *aDarkColor;
GdkRGBA stop;
for (int index = 1;
CAIRO_STATUS_SUCCESS ==
cairo_pattern_get_color_stop_rgba(pattern, index, nullptr,
&stop.red, &stop.green,
&stop.blue, &stop.alpha);
++index) {
double lightness, darkness;
GetLightAndDarkness(stop, &lightness, &darkness);
if (lightness > maxLightness) {
maxLightness = lightness;
*aLightColor = stop;
}
if (darkness > maxDarkness) {
maxDarkness = darkness;
*aDarkColor = stop;
}
}
return true;
}
static bool
GetUnicoBorderGradientColors(GtkStyleContext* aContext,
GdkRGBA* aLightColor, GdkRGBA* aDarkColor)
{
// Ubuntu 12.04 has GTK engine Unico-1.0.2, which overrides render_frame,
// providing its own border code. Ubuntu 14.04 has
// Unico-1.0.3+14.04.20140109, which does not override render_frame, and
// so does not need special attention. The earlier Unico can be detected
// by the -unico-border-gradient style property it registers.
// gtk_style_properties_lookup_property() is checked first to avoid the
// warning from gtk_style_context_get_property() when the property does
// not exist. (gtk_render_frame() of GTK+ 3.16 no longer uses the
// engine.)
const char* propertyName = "-unico-border-gradient";
if (!gtk_style_properties_lookup_property(propertyName, nullptr, nullptr))
return false;
// -unico-border-gradient is used only when the CSS node's engine is Unico.
GtkThemingEngine* engine;
GtkStateFlags state = gtk_style_context_get_state(aContext);
gtk_style_context_get(aContext, state, "engine", &engine, nullptr);
if (strcmp(g_type_name(G_TYPE_FROM_INSTANCE(engine)), "UnicoEngine") != 0)
return false;
// draw_border() of Unico engine uses -unico-border-gradient
// in preference to border-color.
GValue value = G_VALUE_INIT;
gtk_style_context_get_property(aContext, propertyName, state, &value);
bool result = GetGradientColors(&value, aLightColor, aDarkColor);
g_value_unset(&value);
return result;
}
// Sets |aLightColor| and |aDarkColor| to colors from |aContext|. Returns
// true if |aContext| uses these colors to render a visible border.
// If returning false, then the colors returned are a fallback from the
// border-color value even though |aContext| does not use these colors to
// render a border.
static bool
GetBorderColors(GtkStyleContext* aContext,
GdkRGBA* aLightColor, GdkRGBA* aDarkColor)
{
// Determine whether the border on this style context is visible.
GtkStateFlags state = gtk_style_context_get_state(aContext);
GtkBorderStyle borderStyle;
gtk_style_context_get(aContext, state, GTK_STYLE_PROPERTY_BORDER_STYLE,
&borderStyle, nullptr);
bool visible = borderStyle != GTK_BORDER_STYLE_NONE &&
borderStyle != GTK_BORDER_STYLE_HIDDEN;
if (visible) {
// GTK has an initial value of zero for border-widths, and so themes
// need to explicitly set border-widths to make borders visible.
GtkBorder border;
gtk_style_context_get_border(aContext, GTK_STATE_FLAG_NORMAL, &border);
visible = border.top != 0 || border.right != 0 ||
border.bottom != 0 || border.left != 0;
}
if (visible &&
GetUnicoBorderGradientColors(aContext, aLightColor, aDarkColor))
return true;
// The initial value for the border-color is the foreground color, and so
// this will usually return a color distinct from the background even if
// there is no visible border detected.
gtk_style_context_get_border_color(aContext, state, aDarkColor);
// TODO GTK3 - update aLightColor
// for GTK_BORDER_STYLE_INSET/OUTSET/GROVE/RIDGE border styles.
// https://bugzilla.mozilla.org/show_bug.cgi?id=978172#c25
*aLightColor = *aDarkColor;
return visible;
}
static bool
GetBorderColors(GtkStyleContext* aContext,
nscolor* aLightColor, nscolor* aDarkColor)
{
GdkRGBA lightColor, darkColor;
bool ret = GetBorderColors(aContext, &lightColor, &darkColor);
*aLightColor = GDK_RGBA_TO_NS_RGBA(lightColor);
*aDarkColor = GDK_RGBA_TO_NS_RGBA(darkColor);
return ret;
}
#endif
nsresult
nsLookAndFeel::NativeGetColor(ColorID aID, nscolor& aColor)
{
#if (MOZ_WIDGET_GTK == 3)
GdkRGBA gdk_color;
#endif
nsresult res = NS_OK;
switch (aID) {
// These colors don't seem to be used for anything anymore in Mozilla
// (except here at least TextSelectBackground and TextSelectForeground)
// The CSS2 colors below are used.
#if (MOZ_WIDGET_GTK == 2)
case eColorID_WindowBackground:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->base[GTK_STATE_NORMAL]);
break;
case eColorID_WindowForeground:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->text[GTK_STATE_NORMAL]);
break;
case eColorID_WidgetBackground:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_NORMAL]);
break;
case eColorID_WidgetForeground:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->fg[GTK_STATE_NORMAL]);
break;
case eColorID_WidgetSelectBackground:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_SELECTED]);
break;
case eColorID_WidgetSelectForeground:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->fg[GTK_STATE_SELECTED]);
break;
#else
case eColorID_WindowBackground:
case eColorID_WidgetBackground:
case eColorID_TextBackground:
case eColorID_activecaption: // active window caption background
case eColorID_appworkspace: // MDI background color
case eColorID_background: // desktop background
case eColorID_window:
case eColorID_windowframe:
case eColorID__moz_dialog:
case eColorID__moz_combobox:
aColor = sMozWindowBackground;
break;
case eColorID_WindowForeground:
case eColorID_WidgetForeground:
case eColorID_TextForeground:
case eColorID_captiontext: // text in active window caption, size box, and scrollbar arrow box (!)
case eColorID_windowtext:
case eColorID__moz_dialogtext:
aColor = sMozWindowText;
break;
case eColorID_WidgetSelectBackground:
case eColorID_TextSelectBackground:
case eColorID_IMESelectedRawTextBackground:
case eColorID_IMESelectedConvertedTextBackground:
case eColorID__moz_dragtargetzone:
case eColorID__moz_cellhighlight:
case eColorID__moz_html_cellhighlight:
case eColorID_highlight: // preference selected item,
aColor = sTextSelectedBackground;
break;
case eColorID_WidgetSelectForeground:
case eColorID_TextSelectForeground:
case eColorID_IMESelectedRawTextForeground:
case eColorID_IMESelectedConvertedTextForeground:
case eColorID_highlighttext:
case eColorID__moz_cellhighlighttext:
case eColorID__moz_html_cellhighlighttext:
aColor = sTextSelectedText;
break;
#endif
case eColorID_Widget3DHighlight:
aColor = NS_RGB(0xa0,0xa0,0xa0);
break;
case eColorID_Widget3DShadow:
aColor = NS_RGB(0x40,0x40,0x40);
break;
#if (MOZ_WIDGET_GTK == 2)
case eColorID_TextBackground:
// not used?
aColor = GDK_COLOR_TO_NS_RGB(mStyle->base[GTK_STATE_NORMAL]);
break;
case eColorID_TextForeground:
// not used?
aColor = GDK_COLOR_TO_NS_RGB(mStyle->text[GTK_STATE_NORMAL]);
break;
case eColorID_TextSelectBackground:
case eColorID_IMESelectedRawTextBackground:
case eColorID_IMESelectedConvertedTextBackground:
// still used
aColor = GDK_COLOR_TO_NS_RGB(mStyle->base[GTK_STATE_SELECTED]);
break;
case eColorID_TextSelectForeground:
case eColorID_IMESelectedRawTextForeground:
case eColorID_IMESelectedConvertedTextForeground:
// still used
aColor = GDK_COLOR_TO_NS_RGB(mStyle->text[GTK_STATE_SELECTED]);
break;
#endif
case eColorID_IMERawInputBackground:
case eColorID_IMEConvertedTextBackground:
aColor = NS_TRANSPARENT;
break;
case eColorID_IMERawInputForeground:
case eColorID_IMEConvertedTextForeground:
aColor = NS_SAME_AS_FOREGROUND_COLOR;
break;
case eColorID_IMERawInputUnderline:
case eColorID_IMEConvertedTextUnderline:
aColor = NS_SAME_AS_FOREGROUND_COLOR;
break;
case eColorID_IMESelectedRawTextUnderline:
case eColorID_IMESelectedConvertedTextUnderline:
aColor = NS_TRANSPARENT;
break;
case eColorID_SpellCheckerUnderline:
aColor = NS_RGB(0xff, 0, 0);
break;
#if (MOZ_WIDGET_GTK == 2)
// css2 http://www.w3.org/TR/REC-CSS2/ui.html#system-colors
case eColorID_activeborder:
// active window border
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_NORMAL]);
break;
case eColorID_activecaption:
// active window caption background
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_NORMAL]);
break;
case eColorID_appworkspace:
// MDI background color
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_NORMAL]);
break;
case eColorID_background:
// desktop background
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_NORMAL]);
break;
case eColorID_captiontext:
// text in active window caption, size box, and scrollbar arrow box (!)
aColor = GDK_COLOR_TO_NS_RGB(mStyle->fg[GTK_STATE_NORMAL]);
break;
case eColorID_graytext:
// disabled text in windows, menus, etc.
aColor = GDK_COLOR_TO_NS_RGB(mStyle->fg[GTK_STATE_INSENSITIVE]);
break;
case eColorID_highlight:
// background of selected item
aColor = GDK_COLOR_TO_NS_RGB(mStyle->base[GTK_STATE_SELECTED]);
break;
case eColorID_highlighttext:
// text of selected item
aColor = GDK_COLOR_TO_NS_RGB(mStyle->text[GTK_STATE_SELECTED]);
break;
case eColorID_inactiveborder:
// inactive window border
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_NORMAL]);
break;
case eColorID_inactivecaption:
// inactive window caption
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_INSENSITIVE]);
break;
case eColorID_inactivecaptiontext:
// text in inactive window caption
aColor = GDK_COLOR_TO_NS_RGB(mStyle->fg[GTK_STATE_INSENSITIVE]);
break;
#else
// css2 http://www.w3.org/TR/REC-CSS2/ui.html#system-colors
case eColorID_activeborder: {
// active window border
GtkStyleContext *style = ClaimStyleContext(MOZ_GTK_WINDOW);
gtk_style_context_get_border_color(style,
GTK_STATE_FLAG_NORMAL, &gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
ReleaseStyleContext(style);
break;
}
case eColorID_inactiveborder: {
// inactive window border
GtkStyleContext *style = ClaimStyleContext(MOZ_GTK_WINDOW);
gtk_style_context_get_border_color(style,
GTK_STATE_FLAG_INSENSITIVE,
&gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
ReleaseStyleContext(style);
break;
}
case eColorID_graytext: // disabled text in windows, menus, etc.
case eColorID_inactivecaptiontext: // text in inactive window caption
aColor = sMenuTextInactive;
break;
case eColorID_inactivecaption: {
// inactive window caption
GtkStyleContext *style = ClaimStyleContext(MOZ_GTK_WINDOW);
gtk_style_context_get_background_color(style,
GTK_STATE_FLAG_INSENSITIVE,
&gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
ReleaseStyleContext(style);
break;
}
#endif
case eColorID_infobackground:
// tooltip background color
aColor = sInfoBackground;
break;
case eColorID_infotext:
// tooltip text color
aColor = sInfoText;
break;
case eColorID_menu:
// menu background
aColor = sMenuBackground;
break;
case eColorID_menutext:
// menu text
aColor = sMenuText;
break;
case eColorID_scrollbar:
// scrollbar gray area
#if (MOZ_WIDGET_GTK == 2)
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_ACTIVE]);
#else
aColor = sMozScrollbar;
#endif
break;
case eColorID_threedlightshadow:
// 3-D highlighted inner edge color
// always same as background in GTK code
case eColorID_threedface:
case eColorID_buttonface:
// 3-D face color
#if (MOZ_WIDGET_GTK == 3)
aColor = sMozWindowBackground;
#else
aColor = sButtonBackground;
#endif
break;
case eColorID_buttontext:
// text on push buttons
aColor = sButtonText;
break;
case eColorID_buttonhighlight:
// 3-D highlighted edge color
case eColorID_threedhighlight:
// 3-D highlighted outer edge color
aColor = sFrameOuterLightBorder;
break;
case eColorID_buttonshadow:
// 3-D shadow edge color
case eColorID_threedshadow:
// 3-D shadow inner edge color
aColor = sFrameInnerDarkBorder;
break;
#if (MOZ_WIDGET_GTK == 2)
case eColorID_threeddarkshadow:
// 3-D shadow outer edge color
aColor = GDK_COLOR_TO_NS_RGB(mStyle->black);
break;
case eColorID_window:
case eColorID_windowframe:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_NORMAL]);
break;
case eColorID_windowtext:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->fg[GTK_STATE_NORMAL]);
break;
case eColorID__moz_eventreerow:
case eColorID__moz_field:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->base[GTK_STATE_NORMAL]);
break;
case eColorID__moz_fieldtext:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->text[GTK_STATE_NORMAL]);
break;
case eColorID__moz_dialog:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_NORMAL]);
break;
case eColorID__moz_dialogtext:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->fg[GTK_STATE_NORMAL]);
break;
case eColorID__moz_dragtargetzone:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_SELECTED]);
break;
case eColorID__moz_buttondefault:
// default button border color
aColor = GDK_COLOR_TO_NS_RGB(mStyle->black);
break;
case eColorID__moz_buttonhoverface:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->bg[GTK_STATE_PRELIGHT]);
break;
case eColorID__moz_buttonhovertext:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->fg[GTK_STATE_PRELIGHT]);
break;
case eColorID__moz_cellhighlight:
case eColorID__moz_html_cellhighlight:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->base[GTK_STATE_ACTIVE]);
break;
case eColorID__moz_cellhighlighttext:
case eColorID__moz_html_cellhighlighttext:
aColor = GDK_COLOR_TO_NS_RGB(mStyle->text[GTK_STATE_ACTIVE]);
break;
#else
case eColorID_threeddarkshadow:
// Hardcode to black
aColor = NS_RGB(0x00,0x00,0x00);
break;
case eColorID__moz_eventreerow:
case eColorID__moz_field:
aColor = sMozFieldBackground;
break;
case eColorID__moz_fieldtext:
aColor = sMozFieldText;
break;
case eColorID__moz_buttondefault: {
// default button border color
GtkStyleContext *style = ClaimStyleContext(MOZ_GTK_BUTTON);
gtk_style_context_get_border_color(style,
GTK_STATE_FLAG_NORMAL, &gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
ReleaseStyleContext(style);
break;
}
case eColorID__moz_buttonhoverface: {
GtkStyleContext *style = ClaimStyleContext(MOZ_GTK_BUTTON);
gtk_style_context_get_background_color(style,
GTK_STATE_FLAG_PRELIGHT,
&gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
ReleaseStyleContext(style);
break;
}
case eColorID__moz_buttonhovertext:
aColor = sButtonHoverText;
break;
#endif
case eColorID__moz_menuhover:
aColor = sMenuHover;
break;
case eColorID__moz_menuhovertext:
aColor = sMenuHoverText;
break;
case eColorID__moz_oddtreerow:
aColor = sOddCellBackground;
break;
case eColorID__moz_nativehyperlinktext:
aColor = sNativeHyperLinkText;
break;
case eColorID__moz_comboboxtext:
aColor = sComboBoxText;
break;
#if (MOZ_WIDGET_GTK == 2)
case eColorID__moz_combobox:
aColor = sComboBoxBackground;
break;
#endif
case eColorID__moz_menubartext:
aColor = sMenuBarText;
break;
case eColorID__moz_menubarhovertext:
aColor = sMenuBarHoverText;
break;
case eColorID__moz_gtk_info_bar_text:
#if (MOZ_WIDGET_GTK == 3)
aColor = sInfoBarText;
#else
aColor = sInfoText;
#endif
break;
default:
/* default color is BLACK */
aColor = 0;
res = NS_ERROR_FAILURE;
break;
}
return res;
}
#if (MOZ_WIDGET_GTK == 2)
static void darken_gdk_color(GdkColor *src, GdkColor *dest)
{
gdouble red;
gdouble green;
gdouble blue;
red = (gdouble) src->red / 65535.0;
green = (gdouble) src->green / 65535.0;
blue = (gdouble) src->blue / 65535.0;
red *= 0.93;
green *= 0.93;
blue *= 0.93;
dest->red = red * 65535.0;
dest->green = green * 65535.0;
dest->blue = blue * 65535.0;
}
#endif
static int32_t CheckWidgetStyle(GtkWidget* aWidget, const char* aStyle, int32_t aResult) {
gboolean value = FALSE;
gtk_widget_style_get(aWidget, aStyle, &value, nullptr);
return value ? aResult : 0;
}
static int32_t ConvertGTKStepperStyleToMozillaScrollArrowStyle(GtkWidget* aWidget)
{
if (!aWidget)
return mozilla::LookAndFeel::eScrollArrowStyle_Single;
return
CheckWidgetStyle(aWidget, "has-backward-stepper",
mozilla::LookAndFeel::eScrollArrow_StartBackward) |
CheckWidgetStyle(aWidget, "has-forward-stepper",
mozilla::LookAndFeel::eScrollArrow_EndForward) |
CheckWidgetStyle(aWidget, "has-secondary-backward-stepper",
mozilla::LookAndFeel::eScrollArrow_EndBackward) |
CheckWidgetStyle(aWidget, "has-secondary-forward-stepper",
mozilla::LookAndFeel::eScrollArrow_StartForward);
}
nsresult
nsLookAndFeel::GetIntImpl(IntID aID, int32_t &aResult)
{
nsresult res = NS_OK;
// Set these before they can get overrided in the nsXPLookAndFeel.
switch (aID) {
case eIntID_ScrollButtonLeftMouseButtonAction:
aResult = 0;
return NS_OK;
case eIntID_ScrollButtonMiddleMouseButtonAction:
aResult = 1;
return NS_OK;
case eIntID_ScrollButtonRightMouseButtonAction:
aResult = 2;
return NS_OK;
default:
break;
}
res = nsXPLookAndFeel::GetIntImpl(aID, aResult);
if (NS_SUCCEEDED(res))
return res;
res = NS_OK;
switch (aID) {
case eIntID_CaretBlinkTime:
{
GtkSettings *settings;
gint blink_time;
gboolean blink;
settings = gtk_settings_get_default ();
g_object_get (settings,
"gtk-cursor-blink-time", &blink_time,
"gtk-cursor-blink", &blink,
nullptr);
if (blink)
aResult = (int32_t) blink_time;
else
aResult = 0;
break;
}
case eIntID_CaretWidth:
aResult = 1;
break;
case eIntID_ShowCaretDuringSelection:
aResult = 0;
break;
case eIntID_SelectTextfieldsOnKeyFocus:
{
GtkWidget *entry;
GtkSettings *settings;
gboolean select_on_focus;
entry = gtk_entry_new();
g_object_ref_sink(entry);
settings = gtk_widget_get_settings(entry);
g_object_get(settings,
"gtk-entry-select-on-focus",
&select_on_focus,
nullptr);
if(select_on_focus)
aResult = 1;
else
aResult = 0;
gtk_widget_destroy(entry);
g_object_unref(entry);
}
break;
case eIntID_ScrollToClick:
{
GtkSettings *settings;
gboolean warps_slider = FALSE;
settings = gtk_settings_get_default ();
if (g_object_class_find_property (G_OBJECT_GET_CLASS(settings),
"gtk-primary-button-warps-slider")) {
g_object_get (settings,
"gtk-primary-button-warps-slider",
&warps_slider,
nullptr);
}
if (warps_slider)
aResult = 1;
else
aResult = 0;
}
break;
case eIntID_SubmenuDelay:
{
GtkSettings *settings;
gint delay;
settings = gtk_settings_get_default ();
g_object_get (settings, "gtk-menu-popup-delay", &delay, nullptr);
aResult = (int32_t) delay;
break;
}
case eIntID_TooltipDelay:
{
aResult = 500;
break;
}
case eIntID_MenusCanOverlapOSBar:
// we want XUL popups to be able to overlap the task bar.
aResult = 1;
break;
case eIntID_SkipNavigatingDisabledMenuItem:
aResult = 1;
break;
case eIntID_DragThresholdX:
case eIntID_DragThresholdY:
{
GtkWidget* box = gtk_hbox_new(FALSE, 5);
gint threshold = 0;
g_object_get(gtk_widget_get_settings(box),
"gtk-dnd-drag-threshold", &threshold,
nullptr);
g_object_ref_sink(box);
aResult = threshold;
}
break;
case eIntID_ScrollArrowStyle:
moz_gtk_init();
aResult =
ConvertGTKStepperStyleToMozillaScrollArrowStyle(moz_gtk_get_scrollbar_widget());
break;
case eIntID_ScrollSliderStyle:
aResult = eScrollThumbStyle_Proportional;
break;
case eIntID_TreeOpenDelay:
aResult = 1000;
break;
case eIntID_TreeCloseDelay:
aResult = 1000;
break;
case eIntID_TreeLazyScrollDelay:
aResult = 150;
break;
case eIntID_TreeScrollDelay:
aResult = 100;
break;
case eIntID_TreeScrollLinesMax:
aResult = 3;
break;
case eIntID_DWMCompositor:
case eIntID_WindowsClassic:
case eIntID_WindowsDefaultTheme:
case eIntID_WindowsThemeIdentifier:
case eIntID_OperatingSystemVersionIdentifier:
aResult = 0;
res = NS_ERROR_NOT_IMPLEMENTED;
break;
case eIntID_TouchEnabled:
#if MOZ_WIDGET_GTK == 3
aResult = mozilla::widget::WidgetUtils::IsTouchDeviceSupportPresent();
break;
#else
aResult = 0;
res = NS_ERROR_NOT_IMPLEMENTED;
#endif
break;
case eIntID_MacGraphiteTheme:
aResult = 0;
res = NS_ERROR_NOT_IMPLEMENTED;
break;
case eIntID_AlertNotificationOrigin:
aResult = NS_ALERT_TOP;
break;
case eIntID_IMERawInputUnderlineStyle:
case eIntID_IMEConvertedTextUnderlineStyle:
aResult = NS_STYLE_TEXT_DECORATION_STYLE_SOLID;
break;
case eIntID_IMESelectedRawTextUnderlineStyle:
case eIntID_IMESelectedConvertedTextUnderline:
aResult = NS_STYLE_TEXT_DECORATION_STYLE_NONE;
break;
case eIntID_SpellCheckerUnderlineStyle:
aResult = NS_STYLE_TEXT_DECORATION_STYLE_WAVY;
break;
case eIntID_MenuBarDrag:
aResult = sMenuSupportsDrag;
break;
case eIntID_ScrollbarButtonAutoRepeatBehavior:
aResult = 1;
break;
case eIntID_SwipeAnimationEnabled:
aResult = 0;
break;
case eIntID_ColorPickerAvailable:
aResult = 1;
break;
case eIntID_ContextMenuOffsetVertical:
case eIntID_ContextMenuOffsetHorizontal:
aResult = 2;
break;
default:
aResult = 0;
res = NS_ERROR_FAILURE;
}
return res;
}
nsresult
nsLookAndFeel::GetFloatImpl(FloatID aID, float &aResult)
{
nsresult res = NS_OK;
res = nsXPLookAndFeel::GetFloatImpl(aID, aResult);
if (NS_SUCCEEDED(res))
return res;
res = NS_OK;
switch (aID) {
case eFloatID_IMEUnderlineRelativeSize:
aResult = 1.0f;
break;
case eFloatID_SpellCheckerUnderlineRelativeSize:
aResult = 1.0f;
break;
case eFloatID_CaretAspectRatio:
aResult = sCaretRatio;
break;
default:
aResult = -1.0;
res = NS_ERROR_FAILURE;
}
return res;
}
static void
GetSystemFontInfo(GtkWidget *aWidget,
nsString *aFontName,
gfxFontStyle *aFontStyle)
{
GtkSettings *settings = gtk_widget_get_settings(aWidget);
aFontStyle->style = NS_FONT_STYLE_NORMAL;
gchar *fontname;
g_object_get(settings, "gtk-font-name", &fontname, nullptr);
PangoFontDescription *desc;
desc = pango_font_description_from_string(fontname);
aFontStyle->systemFont = true;
g_free(fontname);
NS_NAMED_LITERAL_STRING(quote, "\"");
NS_ConvertUTF8toUTF16 family(pango_font_description_get_family(desc));
*aFontName = quote + family + quote;
aFontStyle->weight = pango_font_description_get_weight(desc);
// FIXME: Set aFontStyle->stretch correctly!
aFontStyle->stretch = NS_FONT_STRETCH_NORMAL;
float size = float(pango_font_description_get_size(desc)) / PANGO_SCALE;
// |size| is now either pixels or pango-points (not Mozilla-points!)
if (!pango_font_description_get_size_is_absolute(desc)) {
// |size| is in pango-points, so convert to pixels.
size *= float(gfxPlatformGtk::GetDPI()) / POINTS_PER_INCH_FLOAT;
}
// Scale fonts up on HiDPI displays.
// This would be done automatically with cairo, but we manually manage
// the display scale for platform consistency.
size *= nsScreenGtk::GetGtkMonitorScaleFactor();
// |size| is now pixels
aFontStyle->size = size;
pango_font_description_free(desc);
}
static void
GetSystemFontInfo(LookAndFeel::FontID aID,
nsString *aFontName,
gfxFontStyle *aFontStyle)
{
if (aID == LookAndFeel::eFont_Widget) {
GtkWidget *label = gtk_label_new("M");
GtkWidget *parent = gtk_fixed_new();
GtkWidget *window = gtk_window_new(GTK_WINDOW_POPUP);
gtk_container_add(GTK_CONTAINER(parent), label);
gtk_container_add(GTK_CONTAINER(window), parent);
gtk_widget_ensure_style(label);
GetSystemFontInfo(label, aFontName, aFontStyle);
gtk_widget_destroy(window); // no unref, windows are different
} else if (aID == LookAndFeel::eFont_Button) {
GtkWidget *label = gtk_label_new("M");
GtkWidget *parent = gtk_fixed_new();
GtkWidget *button = gtk_button_new();
GtkWidget *window = gtk_window_new(GTK_WINDOW_POPUP);
gtk_container_add(GTK_CONTAINER(button), label);
gtk_container_add(GTK_CONTAINER(parent), button);
gtk_container_add(GTK_CONTAINER(window), parent);
gtk_widget_ensure_style(label);
GetSystemFontInfo(label, aFontName, aFontStyle);
gtk_widget_destroy(window); // no unref, windows are different
} else if (aID == LookAndFeel::eFont_Field) {
GtkWidget *entry = gtk_entry_new();
GtkWidget *parent = gtk_fixed_new();
GtkWidget *window = gtk_window_new(GTK_WINDOW_POPUP);
gtk_container_add(GTK_CONTAINER(parent), entry);
gtk_container_add(GTK_CONTAINER(window), parent);
gtk_widget_ensure_style(entry);
GetSystemFontInfo(entry, aFontName, aFontStyle);
gtk_widget_destroy(window); // no unref, windows are different
} else {
MOZ_ASSERT(aID == LookAndFeel::eFont_Menu, "unexpected font ID");
GtkWidget *accel_label = gtk_accel_label_new("M");
GtkWidget *menuitem = gtk_menu_item_new();
GtkWidget *menu = gtk_menu_new();
g_object_ref_sink(menu);
gtk_container_add(GTK_CONTAINER(menuitem), accel_label);
gtk_menu_shell_append((GtkMenuShell *)GTK_MENU(menu), menuitem);
gtk_widget_ensure_style(accel_label);
GetSystemFontInfo(accel_label, aFontName, aFontStyle);
g_object_unref(menu);
}
}
bool
nsLookAndFeel::GetFontImpl(FontID aID, nsString& aFontName,
gfxFontStyle& aFontStyle,
float aDevPixPerCSSPixel)
{
nsString *cachedFontName = nullptr;
gfxFontStyle *cachedFontStyle = nullptr;
bool *isCached = nullptr;
switch (aID) {
case eFont_Menu: // css2
case eFont_PullDownMenu: // css3
cachedFontName = &mMenuFontName;
cachedFontStyle = &mMenuFontStyle;
isCached = &mMenuFontCached;
aID = eFont_Menu;
break;
case eFont_Field: // css3
case eFont_List: // css3
cachedFontName = &mFieldFontName;
cachedFontStyle = &mFieldFontStyle;
isCached = &mFieldFontCached;
aID = eFont_Field;
break;
case eFont_Button: // css3
cachedFontName = &mButtonFontName;
cachedFontStyle = &mButtonFontStyle;
isCached = &mButtonFontCached;
break;
case eFont_Caption: // css2
case eFont_Icon: // css2
case eFont_MessageBox: // css2
case eFont_SmallCaption: // css2
case eFont_StatusBar: // css2
case eFont_Window: // css3
case eFont_Document: // css3
case eFont_Workspace: // css3
case eFont_Desktop: // css3
case eFont_Info: // css3
case eFont_Dialog: // css3
case eFont_Tooltips: // moz
case eFont_Widget: // moz
cachedFontName = &mDefaultFontName;
cachedFontStyle = &mDefaultFontStyle;
isCached = &mDefaultFontCached;
aID = eFont_Widget;
break;
}
if (!*isCached) {
GetSystemFontInfo(aID, cachedFontName, cachedFontStyle);
*isCached = true;
}
aFontName = *cachedFontName;
aFontStyle = *cachedFontStyle;
return true;
}
void
nsLookAndFeel::Init()
{
GdkColor colorValue;
GdkColor *colorValuePtr;
#if (MOZ_WIDGET_GTK == 2)
NS_ASSERTION(!mStyle, "already initialized");
// GtkInvisibles come with a refcount that is not floating
// (since their initialization code calls g_object_ref_sink) and
// their destroy code releases that reference (which means they
// have to be explicitly destroyed, since calling unref enough
// to cause destruction would lead to *another* unref).
// However, this combination means that it's actually still ok
// to use the normal pattern, which is to g_object_ref_sink
// after construction, and then destroy *and* unref when we're
// done. (Though we could skip the g_object_ref_sink and the
// corresponding g_object_unref, but that's particular to
// GtkInvisibles and GtkWindows.)
GtkWidget *widget = gtk_invisible_new();
g_object_ref_sink(widget); // effectively g_object_ref (see above)
gtk_widget_ensure_style(widget);
mStyle = gtk_style_copy(gtk_widget_get_style(widget));
gtk_widget_destroy(widget);
g_object_unref(widget);
// tooltip foreground and background
GtkStyle *style = gtk_rc_get_style_by_paths(gtk_settings_get_default(),
"gtk-tooltips", "GtkWindow",
GTK_TYPE_WINDOW);
if (style) {
sInfoBackground = GDK_COLOR_TO_NS_RGB(style->bg[GTK_STATE_NORMAL]);
sInfoText = GDK_COLOR_TO_NS_RGB(style->fg[GTK_STATE_NORMAL]);
}
// menu foreground & menu background
GtkWidget *accel_label = gtk_accel_label_new("M");
GtkWidget *menuitem = gtk_menu_item_new();
GtkWidget *menu = gtk_menu_new();
g_object_ref_sink(menu);
gtk_container_add(GTK_CONTAINER(menuitem), accel_label);
gtk_menu_shell_append(GTK_MENU_SHELL(menu), menuitem);
gtk_widget_set_style(accel_label, nullptr);
gtk_widget_set_style(menu, nullptr);
gtk_widget_realize(menu);
gtk_widget_realize(accel_label);
style = gtk_widget_get_style(accel_label);
if (style) {
sMenuText = GDK_COLOR_TO_NS_RGB(style->fg[GTK_STATE_NORMAL]);
}
style = gtk_widget_get_style(menu);
if (style) {
sMenuBackground = GDK_COLOR_TO_NS_RGB(style->bg[GTK_STATE_NORMAL]);
}
style = gtk_widget_get_style(menuitem);
if (style) {
sMenuHover = GDK_COLOR_TO_NS_RGB(style->bg[GTK_STATE_PRELIGHT]);
sMenuHoverText = GDK_COLOR_TO_NS_RGB(style->fg[GTK_STATE_PRELIGHT]);
}
g_object_unref(menu);
#else
GdkRGBA color;
GtkStyleContext *style;
// Gtk manages a screen's CSS in the settings object so we
// ask Gtk to create it explicitly. Otherwise we may end up
// with wrong color theme, see Bug 972382
GtkSettings *settings = gtk_settings_get_for_screen(gdk_screen_get_default());
// Disable dark theme because it interacts poorly with widget styling in
// web content (see bug 1216658).
// To avoid triggering reload of theme settings unnecessarily, only set the
// setting when necessary.
const gchar* dark_setting = "gtk-application-prefer-dark-theme";
gboolean dark;
g_object_get(settings, dark_setting, &dark, nullptr);
if (dark && !PR_GetEnv("MOZ_ALLOW_GTK_DARK_THEME")) {
g_object_set(settings, dark_setting, FALSE, nullptr);
}
// Scrollbar colors
style = ClaimStyleContext(MOZ_GTK_SCROLLBAR_TROUGH_VERTICAL);
gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL, &color);
sMozScrollbar = GDK_RGBA_TO_NS_RGBA(color);
ReleaseStyleContext(style);
// Window colors
style = ClaimStyleContext(MOZ_GTK_WINDOW);
gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL, &color);
sMozWindowBackground = GDK_RGBA_TO_NS_RGBA(color);
gtk_style_context_get_color(style, GTK_STATE_FLAG_NORMAL, &color);
sMozWindowText = GDK_RGBA_TO_NS_RGBA(color);
ReleaseStyleContext(style);
// tooltip foreground and background
style = ClaimStyleContext(MOZ_GTK_TOOLTIP);
gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL, &color);
sInfoBackground = GDK_RGBA_TO_NS_RGBA(color);
ReleaseStyleContext(style);
style = ClaimStyleContext(MOZ_GTK_TOOLTIP_BOX_LABEL);
gtk_style_context_get_color(style, GTK_STATE_FLAG_NORMAL, &color);
sInfoText = GDK_RGBA_TO_NS_RGBA(color);
ReleaseStyleContext(style);
style = ClaimStyleContext(MOZ_GTK_MENUITEM);
{
GtkStyleContext* accelStyle =
CreateStyleForWidget(gtk_accel_label_new("M"), style);
gtk_style_context_get_color(accelStyle, GTK_STATE_FLAG_NORMAL, &color);
sMenuText = GDK_RGBA_TO_NS_RGBA(color);
gtk_style_context_get_color(accelStyle, GTK_STATE_FLAG_INSENSITIVE, &color);
sMenuTextInactive = GDK_RGBA_TO_NS_RGBA(color);
g_object_unref(accelStyle);
}
ReleaseStyleContext(style);
style = ClaimStyleContext(MOZ_GTK_MENUPOPUP);
gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL, &color);
sMenuBackground = GDK_RGBA_TO_NS_RGBA(color);
ReleaseStyleContext(style);
style = ClaimStyleContext(MOZ_GTK_MENUITEM);
gtk_style_context_get_background_color(style, GTK_STATE_FLAG_PRELIGHT, &color);
sMenuHover = GDK_RGBA_TO_NS_RGBA(color);
gtk_style_context_get_color(style, GTK_STATE_FLAG_PRELIGHT, &color);
sMenuHoverText = GDK_RGBA_TO_NS_RGBA(color);
ReleaseStyleContext(style);
#endif
// button styles
GtkWidget *parent = gtk_fixed_new();
GtkWidget *button = gtk_button_new();
GtkWidget *label = gtk_label_new("M");
#if (MOZ_WIDGET_GTK == 2)
GtkWidget *combobox = gtk_combo_box_new();
GtkWidget *comboboxLabel = gtk_label_new("M");
gtk_container_add(GTK_CONTAINER(combobox), comboboxLabel);
#endif
GtkWidget *window = gtk_window_new(GTK_WINDOW_POPUP);
GtkWidget *treeView = gtk_tree_view_new();
GtkWidget *linkButton = gtk_link_button_new("http://example.com/");
GtkWidget *menuBar = gtk_menu_bar_new();
GtkWidget *menuBarItem = gtk_menu_item_new();
GtkWidget *entry = gtk_entry_new();
GtkWidget *textView = gtk_text_view_new();
gtk_container_add(GTK_CONTAINER(button), label);
gtk_container_add(GTK_CONTAINER(parent), button);
gtk_container_add(GTK_CONTAINER(parent), treeView);
gtk_container_add(GTK_CONTAINER(parent), linkButton);
#if (MOZ_WIDGET_GTK == 2)
gtk_container_add(GTK_CONTAINER(parent), combobox);
#endif
gtk_container_add(GTK_CONTAINER(parent), menuBar);
gtk_menu_shell_append(GTK_MENU_SHELL(menuBar), menuBarItem);
gtk_container_add(GTK_CONTAINER(window), parent);
gtk_container_add(GTK_CONTAINER(parent), entry);
gtk_container_add(GTK_CONTAINER(parent), textView);
#if (MOZ_WIDGET_GTK == 2)
gtk_widget_set_style(button, nullptr);
gtk_widget_set_style(label, nullptr);
gtk_widget_set_style(treeView, nullptr);
gtk_widget_set_style(linkButton, nullptr);
gtk_widget_set_style(combobox, nullptr);
gtk_widget_set_style(comboboxLabel, nullptr);
gtk_widget_set_style(menuBar, nullptr);
gtk_widget_set_style(entry, nullptr);
gtk_widget_realize(button);
gtk_widget_realize(label);
gtk_widget_realize(treeView);
gtk_widget_realize(linkButton);
gtk_widget_realize(combobox);
gtk_widget_realize(comboboxLabel);
gtk_widget_realize(menuBar);
gtk_widget_realize(entry);
style = gtk_widget_get_style(label);
if (style) {
sButtonText = GDK_COLOR_TO_NS_RGB(style->fg[GTK_STATE_NORMAL]);
}
style = gtk_widget_get_style(comboboxLabel);
if (style) {
sComboBoxText = GDK_COLOR_TO_NS_RGB(style->fg[GTK_STATE_NORMAL]);
}
style = gtk_widget_get_style(combobox);
if (style) {
sComboBoxBackground = GDK_COLOR_TO_NS_RGB(style->bg[GTK_STATE_NORMAL]);
}
style = gtk_widget_get_style(menuBar);
if (style) {
sMenuBarText = GDK_COLOR_TO_NS_RGB(style->fg[GTK_STATE_NORMAL]);
sMenuBarHoverText = GDK_COLOR_TO_NS_RGB(style->fg[GTK_STATE_SELECTED]);
}
// GTK's guide to fancy odd row background colors:
// 1) Check if a theme explicitly defines an odd row color
// 2) If not, check if it defines an even row color, and darken it
// slightly by a hardcoded value (gtkstyle.c)
// 3) If neither are defined, take the base background color and
// darken that by a hardcoded value
colorValuePtr = nullptr;
gtk_widget_style_get(treeView,
"odd-row-color", &colorValuePtr,
nullptr);
if (colorValuePtr) {
colorValue = *colorValuePtr;
} else {
gtk_widget_style_get(treeView,
"even-row-color", &colorValuePtr,
nullptr);
if (colorValuePtr)
darken_gdk_color(colorValuePtr, &colorValue);
else
darken_gdk_color(&treeView->style->base[GTK_STATE_NORMAL], &colorValue);
}
sOddCellBackground = GDK_COLOR_TO_NS_RGB(colorValue);
if (colorValuePtr)
gdk_color_free(colorValuePtr);
style = gtk_widget_get_style(button);
if (style) {
sButtonBackground = GDK_COLOR_TO_NS_RGB(style->bg[GTK_STATE_NORMAL]);
sFrameOuterLightBorder =
GDK_COLOR_TO_NS_RGB(style->light[GTK_STATE_NORMAL]);
sFrameInnerDarkBorder =
GDK_COLOR_TO_NS_RGB(style->dark[GTK_STATE_NORMAL]);
}
#else
// Text colors
GdkRGBA bgColor;
// If the text window background is translucent, then the background of
// the textview root node is visible.
style = ClaimStyleContext(MOZ_GTK_TEXT_VIEW);
gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL,
&bgColor);
ReleaseStyleContext(style);
style = ClaimStyleContext(MOZ_GTK_TEXT_VIEW_TEXT);
gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL,
&color);
ApplyColorOver(color, &bgColor);
sMozFieldBackground = GDK_RGBA_TO_NS_RGBA(bgColor);
gtk_style_context_get_color(style, GTK_STATE_FLAG_NORMAL, &color);
sMozFieldText = GDK_RGBA_TO_NS_RGBA(color);
// Selected text and background
gtk_style_context_get_background_color(style,
static_cast<GtkStateFlags>(GTK_STATE_FLAG_FOCUSED|GTK_STATE_FLAG_SELECTED),
&color);
sTextSelectedBackground = GDK_RGBA_TO_NS_RGBA(color);
gtk_style_context_get_color(style,
static_cast<GtkStateFlags>(GTK_STATE_FLAG_FOCUSED|GTK_STATE_FLAG_SELECTED),
&color);
sTextSelectedText = GDK_RGBA_TO_NS_RGBA(color);
ReleaseStyleContext(style);
// Button text color
style = ClaimStyleContext(MOZ_GTK_BUTTON);
{
GtkStyleContext* labelStyle =
CreateStyleForWidget(gtk_label_new("M"), style);
gtk_style_context_get_color(labelStyle, GTK_STATE_FLAG_NORMAL, &color);
sButtonText = GDK_RGBA_TO_NS_RGBA(color);
gtk_style_context_get_color(labelStyle, GTK_STATE_FLAG_PRELIGHT, &color);
sButtonHoverText = GDK_RGBA_TO_NS_RGBA(color);
g_object_unref(labelStyle);
}
ReleaseStyleContext(style);
// Combobox text color
style = ClaimStyleContext(MOZ_GTK_COMBOBOX_ENTRY_TEXTAREA);
gtk_style_context_get_color(style, GTK_STATE_FLAG_NORMAL, &color);
sComboBoxText = GDK_RGBA_TO_NS_RGBA(color);
ReleaseStyleContext(style);
// Menubar text and hover text colors
style = ClaimStyleContext(MOZ_GTK_MENUBARITEM);
gtk_style_context_get_color(style, GTK_STATE_FLAG_NORMAL, &color);
sMenuBarText = GDK_RGBA_TO_NS_RGBA(color);
gtk_style_context_get_color(style, GTK_STATE_FLAG_PRELIGHT, &color);
sMenuBarHoverText = GDK_RGBA_TO_NS_RGBA(color);
ReleaseStyleContext(style);
// GTK's guide to fancy odd row background colors:
// 1) Check if a theme explicitly defines an odd row color
// 2) If not, check if it defines an even row color, and darken it
// slightly by a hardcoded value (gtkstyle.c)
// 3) If neither are defined, take the base background color and
// darken that by a hardcoded value
style = ClaimStyleContext(MOZ_GTK_TREEVIEW);
// Get odd row background color
gtk_style_context_save(style);
gtk_style_context_add_region(style, GTK_STYLE_REGION_ROW, GTK_REGION_ODD);
gtk_style_context_get_background_color(style, GTK_STATE_FLAG_NORMAL, &color);
sOddCellBackground = GDK_RGBA_TO_NS_RGBA(color);
gtk_style_context_restore(style);
ReleaseStyleContext(style);
// GtkFrame has a "border" subnode on which Adwaita draws the border.
// Some themes do not draw on this node but draw a border on the widget
// root node, so check the root node if no border is found on the border
// node.
style = ClaimStyleContext(MOZ_GTK_FRAME_BORDER);
bool themeUsesColors =
GetBorderColors(style, &sFrameOuterLightBorder, &sFrameInnerDarkBorder);
ReleaseStyleContext(style);
if (!themeUsesColors) {
style = ClaimStyleContext(MOZ_GTK_FRAME);
GetBorderColors(style, &sFrameOuterLightBorder, &sFrameInnerDarkBorder);
ReleaseStyleContext(style);
}
// GtkInfoBar
// TODO - Use WidgetCache for it?
GtkWidget* infoBar = gtk_info_bar_new();
GtkWidget* infoBarContent = gtk_info_bar_get_content_area(GTK_INFO_BAR(infoBar));
GtkWidget* infoBarLabel = gtk_label_new(nullptr);
gtk_container_add(GTK_CONTAINER(parent), infoBar);
gtk_container_add(GTK_CONTAINER(infoBarContent), infoBarLabel);
style = gtk_widget_get_style_context(infoBarLabel);
gtk_style_context_add_class(style, GTK_STYLE_CLASS_INFO);
gtk_style_context_get_color(style, GTK_STATE_FLAG_NORMAL, &color);
sInfoBarText = GDK_RGBA_TO_NS_RGBA(color);
#endif
// Some themes have a unified menu bar, and support window dragging on it
gboolean supports_menubar_drag = FALSE;
GParamSpec *param_spec =
gtk_widget_class_find_style_property(GTK_WIDGET_GET_CLASS(menuBar),
"window-dragging");
if (param_spec) {
if (g_type_is_a(G_PARAM_SPEC_VALUE_TYPE(param_spec), G_TYPE_BOOLEAN)) {
gtk_widget_style_get(menuBar,
"window-dragging", &supports_menubar_drag,
nullptr);
}
}
sMenuSupportsDrag = supports_menubar_drag;
colorValuePtr = nullptr;
gtk_widget_style_get(linkButton, "link-color", &colorValuePtr, nullptr);
if (colorValuePtr) {
colorValue = *colorValuePtr; // we can't pass deref pointers to GDK_COLOR_TO_NS_RGB
sNativeHyperLinkText = GDK_COLOR_TO_NS_RGB(colorValue);
gdk_color_free(colorValuePtr);
} else {
sNativeHyperLinkText = NS_RGB(0x00,0x00,0xEE);
}
// invisible character styles
guint value;
g_object_get (entry, "invisible-char", &value, nullptr);
sInvisibleCharacter = char16_t(value);
// caret styles
gtk_widget_style_get(entry,
"cursor-aspect-ratio", &sCaretRatio,
nullptr);
gtk_widget_destroy(window);
}
// virtual
char16_t
nsLookAndFeel::GetPasswordCharacterImpl()
{
return sInvisibleCharacter;
}
void
nsLookAndFeel::RefreshImpl()
{
nsXPLookAndFeel::RefreshImpl();
mDefaultFontCached = false;
mButtonFontCached = false;
mFieldFontCached = false;
mMenuFontCached = false;
#if (MOZ_WIDGET_GTK == 2)
g_object_unref(mStyle);
mStyle = nullptr;
#endif
Init();
}
bool
nsLookAndFeel::GetEchoPasswordImpl() {
return false;
}
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