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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"
#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),
#else
mBackgroundStyle(nullptr),
mButtonStyle(nullptr),
#endif
mDefaultFontCached(false), mButtonFontCached(false),
mFieldFontCached(false), mMenuFontCached(false)
{
Init();
}
nsLookAndFeel::~nsLookAndFeel()
{
#if (MOZ_WIDGET_GTK == 2)
g_object_unref(mStyle);
#else
g_object_unref(mBackgroundStyle);
g_object_unref(mButtonStyle);
#endif
}
#if MOZ_WIDGET_GTK != 2
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;
}
static void
GetBorderColors(GtkStyleContext* aContext,
GdkRGBA* aLightColor, GdkRGBA* aDarkColor)
{
if (GetUnicoBorderGradientColors(aContext, aLightColor, aDarkColor))
return;
GtkStateFlags state = gtk_style_context_get_state(aContext);
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;
}
static void
GetBorderColors(GtkStyleContext* aContext,
nscolor* aLightColor, nscolor* aDarkColor)
{
GdkRGBA lightColor, darkColor;
GetBorderColors(aContext, &lightColor, &darkColor);
*aLightColor = GDK_RGBA_TO_NS_RGBA(lightColor);
*aDarkColor = GDK_RGBA_TO_NS_RGBA(darkColor);
}
#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
gtk_style_context_get_border_color(mBackgroundStyle,
GTK_STATE_FLAG_NORMAL, &gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
break;
case eColorID_inactiveborder:
// inactive window border
gtk_style_context_get_border_color(mBackgroundStyle,
GTK_STATE_FLAG_INSENSITIVE,
&gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
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
gtk_style_context_get_background_color(mBackgroundStyle,
GTK_STATE_FLAG_INSENSITIVE,
&gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
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
gtk_style_context_get_border_color(mButtonStyle,
GTK_STATE_FLAG_NORMAL, &gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
break;
case eColorID__moz_buttonhoverface:
gtk_style_context_get_background_color(mButtonStyle,
GTK_STATE_FLAG_PRELIGHT,
&gdk_color);
aColor = GDK_RGBA_TO_NS_RGBA(gdk_color);
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:
case eIntID_MacLionTheme:
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_ImagesInMenus:
aResult = moz_gtk_images_in_menus();
break;
case eIntID_ImagesInButtons:
aResult = moz_gtk_images_in_buttons();
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;