271 lines
8.8 KiB
Plaintext
271 lines
8.8 KiB
Plaintext
/* -*- Mode: C++; tab-width: 8; 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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "VibrancyManager.h"
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#include "nsChildView.h"
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#import <objc/message.h>
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using namespace mozilla;
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void
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VibrancyManager::UpdateVibrantRegion(VibrancyType aType,
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const LayoutDeviceIntRegion& aRegion)
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{
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if (aRegion.IsEmpty()) {
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mVibrantRegions.Remove(uint32_t(aType));
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return;
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}
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auto& vr = *mVibrantRegions.LookupOrAdd(uint32_t(aType));
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vr.UpdateRegion(aRegion, mCoordinateConverter, mContainerView, ^() {
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return this->CreateEffectView(aType);
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});
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}
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void
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VibrancyManager::ClearVibrantAreas() const
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{
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for (auto iter = mVibrantRegions.ConstIter(); !iter.Done(); iter.Next()) {
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ClearVibrantRegion(iter.UserData()->Region());
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}
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}
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void
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VibrancyManager::ClearVibrantRegion(const LayoutDeviceIntRegion& aVibrantRegion) const
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{
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[[NSColor clearColor] set];
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for (auto iter = aVibrantRegion.RectIter(); !iter.Done(); iter.Next()) {
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NSRectFill(mCoordinateConverter.DevPixelsToCocoaPoints(iter.Get()));
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}
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}
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@interface NSView(CurrentFillColor)
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- (NSColor*)_currentFillColor;
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@end
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static NSColor*
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AdjustedColor(NSColor* aFillColor, VibrancyType aType)
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{
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if (aType == VibrancyType::MENU && [aFillColor alphaComponent] == 1.0) {
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// The opaque fill color that's used for the menu background when "Reduce
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// vibrancy" is checked in the system accessibility prefs is too dark.
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// This is probably because we're not using the right material for menus,
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// see VibrancyManager::CreateEffectView.
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return [NSColor colorWithDeviceWhite:0.96 alpha:1.0];
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}
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return aFillColor;
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}
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NSColor*
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VibrancyManager::VibrancyFillColorForType(VibrancyType aType)
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{
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NSView* view = mVibrantRegions.LookupOrAdd(uint32_t(aType))->GetAnyView();
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if (view && [view respondsToSelector:@selector(_currentFillColor)]) {
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// -[NSVisualEffectView _currentFillColor] is the color that our view
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// would draw during its drawRect implementation, if we hadn't
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// disabled that.
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return AdjustedColor([view _currentFillColor], aType);
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}
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return [NSColor whiteColor];
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}
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@interface NSView(FontSmoothingBackgroundColor)
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- (NSColor*)fontSmoothingBackgroundColor;
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@end
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NSColor*
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VibrancyManager::VibrancyFontSmoothingBackgroundColorForType(VibrancyType aType)
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{
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NSView* view = mVibrantRegions.LookupOrAdd(uint32_t(aType))->GetAnyView();
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if (view && [view respondsToSelector:@selector(fontSmoothingBackgroundColor)]) {
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return [view fontSmoothingBackgroundColor];
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}
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return [NSColor clearColor];
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}
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static void
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DrawRectNothing(id self, SEL _cmd, NSRect aRect)
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{
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// The super implementation would clear the background.
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// That's fine for views that are placed below their content, but our
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// setup is different: Our drawn content is drawn to mContainerView, which
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// sits below this EffectView. So we must not clear the background here,
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// because we'd erase that drawn content.
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// Of course the regular content drawing still needs to clear the background
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// behind vibrant areas. This is taken care of by having nsNativeThemeCocoa
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// return true from NeedToClearBackgroundBehindWidget for vibrant widgets.
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}
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static NSView*
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HitTestNil(id self, SEL _cmd, NSPoint aPoint)
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{
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// This view must be transparent to mouse events.
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return nil;
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}
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static BOOL
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AllowsVibrancyYes(id self, SEL _cmd)
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{
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// Means that the foreground is blended using a vibrant blend mode.
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return YES;
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}
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static Class
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CreateEffectViewClass(BOOL aForegroundVibrancy)
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{
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// Create a class called EffectView that inherits from NSVisualEffectView
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// and overrides the methods -[NSVisualEffectView drawRect:] and
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// -[NSView hitTest:].
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Class NSVisualEffectViewClass = NSClassFromString(@"NSVisualEffectView");
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const char* className = aForegroundVibrancy
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? "EffectViewWithForegroundVibrancy" : "EffectViewWithoutForegroundVibrancy";
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Class EffectViewClass = objc_allocateClassPair(NSVisualEffectViewClass, className, 0);
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class_addMethod(EffectViewClass, @selector(drawRect:), (IMP)DrawRectNothing,
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"v@:{CGRect={CGPoint=dd}{CGSize=dd}}");
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class_addMethod(EffectViewClass, @selector(hitTest:), (IMP)HitTestNil,
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"@@:{CGPoint=dd}");
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if (aForegroundVibrancy) {
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// Also override the -[NSView allowsVibrancy] method to return YES.
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class_addMethod(EffectViewClass, @selector(allowsVibrancy), (IMP)AllowsVibrancyYes, "I@:");
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}
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return EffectViewClass;
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}
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static id
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AppearanceForVibrancyType(VibrancyType aType)
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{
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Class NSAppearanceClass = NSClassFromString(@"NSAppearance");
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switch (aType) {
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case VibrancyType::LIGHT:
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case VibrancyType::TOOLTIP:
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case VibrancyType::MENU:
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case VibrancyType::HIGHLIGHTED_MENUITEM:
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case VibrancyType::SHEET:
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case VibrancyType::SOURCE_LIST:
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case VibrancyType::SOURCE_LIST_SELECTION:
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case VibrancyType::ACTIVE_SOURCE_LIST_SELECTION:
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return [NSAppearanceClass performSelector:@selector(appearanceNamed:)
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withObject:@"NSAppearanceNameVibrantLight"];
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case VibrancyType::DARK:
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return [NSAppearanceClass performSelector:@selector(appearanceNamed:)
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withObject:@"NSAppearanceNameVibrantDark"];
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}
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}
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#if !defined(MAC_OS_X_VERSION_10_10) || MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_10
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enum {
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NSVisualEffectStateFollowsWindowActiveState,
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NSVisualEffectStateActive,
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NSVisualEffectStateInactive
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};
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enum {
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NSVisualEffectMaterialTitlebar = 3
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};
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#endif
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#if !defined(MAC_OS_X_VERSION_10_11) || MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_11
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enum {
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NSVisualEffectMaterialMenu = 5,
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NSVisualEffectMaterialSidebar = 7
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};
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#endif
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static NSUInteger
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VisualEffectStateForVibrancyType(VibrancyType aType)
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{
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switch (aType) {
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case VibrancyType::TOOLTIP:
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case VibrancyType::MENU:
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case VibrancyType::HIGHLIGHTED_MENUITEM:
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case VibrancyType::SHEET:
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// Tooltip and menu windows are never "key" and sheets always looks
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// active, so we need to tell the vibrancy effect to look active
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// regardless of window state.
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return NSVisualEffectStateActive;
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default:
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return NSVisualEffectStateFollowsWindowActiveState;
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}
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}
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static BOOL
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HasVibrantForeground(VibrancyType aType)
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{
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switch (aType) {
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case VibrancyType::MENU:
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return YES;
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default:
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return NO;
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}
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}
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#if !defined(MAC_OS_X_VERSION_10_12) || MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_12
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enum {
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NSVisualEffectMaterialSelection = 4
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};
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#endif
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@interface NSView(NSVisualEffectViewMethods)
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- (void)setState:(NSUInteger)state;
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- (void)setMaterial:(NSUInteger)material;
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- (void)setEmphasized:(BOOL)emphasized;
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@end
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NSView*
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VibrancyManager::CreateEffectView(VibrancyType aType)
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{
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static Class EffectViewClassWithoutForegroundVibrancy = CreateEffectViewClass(NO);
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static Class EffectViewClassWithForegroundVibrancy = CreateEffectViewClass(YES);
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Class EffectViewClass = HasVibrantForeground(aType)
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? EffectViewClassWithForegroundVibrancy : EffectViewClassWithoutForegroundVibrancy;
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NSView* effectView = [[EffectViewClass alloc] initWithFrame:NSZeroRect];
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[effectView performSelector:@selector(setAppearance:)
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withObject:AppearanceForVibrancyType(aType)];
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[effectView setState:VisualEffectStateForVibrancyType(aType)];
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BOOL canUseElCapitanMaterials = nsCocoaFeatures::OnElCapitanOrLater();
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if (aType == VibrancyType::MENU) {
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// Before 10.11 there is no material that perfectly matches the menu
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// look. Of all available material types, NSVisualEffectMaterialTitlebar
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// is the one that comes closest.
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[effectView setMaterial:canUseElCapitanMaterials ? NSVisualEffectMaterialMenu
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: NSVisualEffectMaterialTitlebar];
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} else if (aType == VibrancyType::SOURCE_LIST && canUseElCapitanMaterials) {
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[effectView setMaterial:NSVisualEffectMaterialSidebar];
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} else if (aType == VibrancyType::HIGHLIGHTED_MENUITEM ||
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aType == VibrancyType::SOURCE_LIST_SELECTION ||
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aType == VibrancyType::ACTIVE_SOURCE_LIST_SELECTION) {
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[effectView setMaterial:NSVisualEffectMaterialSelection];
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if ([effectView respondsToSelector:@selector(setEmphasized:)] &&
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aType != VibrancyType::SOURCE_LIST_SELECTION) {
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[effectView setEmphasized:YES];
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}
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}
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return effectView;
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}
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static bool
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ComputeSystemSupportsVibrancy()
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{
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#ifdef __x86_64__
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return NSClassFromString(@"NSAppearance") &&
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NSClassFromString(@"NSVisualEffectView");
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#else
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// objc_allocateClassPair doesn't work in 32 bit mode, so turn off vibrancy.
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return false;
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#endif
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}
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/* static */ bool
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VibrancyManager::SystemSupportsVibrancy()
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{
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static bool supportsVibrancy = ComputeSystemSupportsVibrancy();
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return supportsVibrancy;
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}
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