mirror of
https://github.com/DerekK19/PDP-8-E-Simulator.git
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129 lines
3.6 KiB
Objective-C
129 lines
3.6 KiB
Objective-C
/*
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* PDP-8/E Simulator
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*
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* Copyright © 1994-2018 Bernhard Baehr
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*
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* PCArrowProvider.m - Provides the image for the PC arrow in the CPU memory view
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*
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* This file is part of PDP-8/E Simulator.
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*
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* PDP-8/E Simulator is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#import <Cocoa/Cocoa.h>
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#import "PCArrowProvider.h"
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#import "Utilities.h"
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#define PC_ARROW_3D_BLUE_IMAGE @"pcArrowBlue.tiff" // images from resource files
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#define PC_ARROW_3D_GRAPHITE_IMAGE @"pcArrowGraphite.tiff"
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#define PC_ARROW_FLAT_BLACK_IMAGE @"pcArrowBlack.tiff"
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#define PC_ARROW_FLAT_GRAY_IMAGE @"pcArrowGray" // cached generated images
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#define PC_ARROW_FLAT_COLORED_IMAGE @"pcArrowColored"
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@implementation PCArrowProvider
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+ (PCArrowProvider *) sharedPCArrowProvider
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{
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static PCArrowProvider *sharedPCArrowProvider;
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if (! sharedPCArrowProvider)
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sharedPCArrowProvider = [[self alloc] init];
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return sharedPCArrowProvider;
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}
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- (PCArrowProvider *) init
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{
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self = [super init];
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[[NSNotificationCenter defaultCenter] addObserver:self
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selector:@selector(notifySystemColorsChanged:) name:NSSystemColorsDidChangeNotification object:nil];
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return self;
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}
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- (void) notifySystemColorsChanged:(NSNotification *)notification
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// remove the colored flat PC arrow from the cache because the accent or highlight color might have changed
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{
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// NSLog (@"PCArrow notifySystemColorsChanged");
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NSImage *image = [NSImage imageNamed:PC_ARROW_FLAT_COLORED_IMAGE];
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if (image)
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[image setName:nil];
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}
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- (NSImage *) generatePCArrowWithColor:(NSColor *)color
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// this is time consuming and slows down PDP-8 trace mode a lot when executed for each image access,
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// so the created images are cached by naming them
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{
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NSImage *image = [NSImage imageNamed:PC_ARROW_FLAT_BLACK_IMAGE];
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[image lockFocus];
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[color set];
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NSSize size = [image size];
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NSRectFillUsingOperation (NSMakeRect(0, 0, size.width, size.height), NSCompositeSourceIn);
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[image unlockFocus];
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return image;
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}
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- (NSImage *) coloredPCArrow
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{
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NSImage *image = [NSImage imageNamed:PC_ARROW_FLAT_COLORED_IMAGE];
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if (image == nil) {
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if (@available(macOS 10.14, *)) {
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image = [self generatePCArrowWithColor:runningOnMojaveOrNewer() ?
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[NSColor controlAccentColor] : [NSColor selectedMenuItemColor]];
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} else {
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image = [self generatePCArrowWithColor: [NSColor selectedMenuItemColor]];
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}
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[image setName:PC_ARROW_FLAT_COLORED_IMAGE];
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}
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return image;
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}
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- (NSImage *) grayPCArrow
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{
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NSImage *image = [NSImage imageNamed:PC_ARROW_FLAT_GRAY_IMAGE];
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if (image == nil) {
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image = [self generatePCArrowWithColor:[NSColor grayColor]];
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[image setName:PC_ARROW_FLAT_GRAY_IMAGE];
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}
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return image;
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}
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- (NSImage *) imageForWindow:(NSWindow *)window
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{
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NSImage *image = nil;
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if (runningOnYosemiteOrNewer()) {
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if ([window isMainWindow])
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image = [self coloredPCArrow];
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else
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image = [self grayPCArrow];
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} else {
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image = [NSImage imageNamed:([NSColor currentControlTint] == NSBlueControlTint && [window isKeyWindow])
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? PC_ARROW_3D_BLUE_IMAGE : PC_ARROW_3D_GRAPHITE_IMAGE];
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}
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return image;
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}
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@end
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