1/* 2 PPOSXGlue_PreserveDrawColorDuringAboutPanel.m 3 4 Copyright 2013-2018 Josh Freeman 5 http://www.twilightedge.com 6 7 This file is part of PikoPixel for Mac OS X. 8 PikoPixel is a graphical application for drawing & editing pixel-art images. 9 10 PikoPixel is free software: you can redistribute it and/or modify it under 11 the terms of the GNU Affero General Public License as published by the 12 Free Software Foundation, either version 3 of the License, or (at your 13 option) any later version approved for PikoPixel by its copyright holder (or 14 an authorized proxy). 15 16 PikoPixel is distributed in the hope that it will be useful, but WITHOUT ANY 17 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 18 FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more 19 details. 20 21 You should have received a copy of the GNU Affero General Public License 22 along with this program. If not, see <http://www.gnu.org/licenses/>. 23*/ 24 25// On OS X 10.5 Leopard & later, opening the About Panel or clicking on its text will change 26// the shared Color Panel's color to light blue - this affects any active color wells, so if the 27// shared Color Panel is visible in order to select a document's draw color, showing or clicking 28// the About Panel will cause the document's draw color to be set to light blue. 29// This happens because the About Panel's text views are set to use the Font Panel (even though 30// they're not editable), so any interactions with the views will automatically update the Font 31// Panel's settings, which includes updating the Color Panel with the Font Panel's current color. 32// Workaround prevents NSTextView instances from using the Font Panel by patching 33// -[NSTextView usesFontPanel] to always return NO. Note that this disables the Font Panel for 34// ALL text views, not just the About Panel's (figuring out which text views belong to the 35// system's About Panel would be a more complicated workaround), however, this doesn't appear to 36// cause any issues, since no current text view in PikoPixel needs to use the Font Panel. 37 38#ifdef __APPLE__ 39 40#import <Cocoa/Cocoa.h> 41#import "NSObject_PPUtilities.h" 42#import "PPAppBootUtilities.h" 43 44 45#define PP_RUNTIME_CHECK__ABOUT_PANEL_CAN_CAUSE_DRAW_COLOR_CHANGE \ 46 (_PP_RUNTIME_CHECK__MAC_OS_X_VERSION_IS_AT_LEAST_10_(5)) 47 48 49@implementation NSObject (PPOSXGlue_PreserveDrawColorDuringAboutPanel) 50 51+ (void) ppOSXGlue_PreserveDrawColorDuringAboutPanel_InstallPatches 52{ 53 macroSwizzleInstanceMethod(NSTextView, usesFontPanel, ppOSXPatch_UsesFontPanel); 54} 55 56+ (void) load 57{ 58 if (PP_RUNTIME_CHECK__ABOUT_PANEL_CAN_CAUSE_DRAW_COLOR_CHANGE) 59 { 60 macroPerformNSObjectSelectorAfterAppLoads( 61 ppOSXGlue_PreserveDrawColorDuringAboutPanel_InstallPatches); 62 } 63} 64 65@end 66 67@implementation NSTextView (PPOSXGlue_PreserveDrawColorDuringAboutPanel) 68 69- (BOOL) ppOSXPatch_UsesFontPanel 70{ 71 return NO; 72} 73 74@end 75 76#endif // __APPLE__ 77