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annotate src/sys/osx/dark_theme.cc @ 339:eac06513db86

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dialog/about: add licenses button otherwise we wouldn't be complying with most of the libraries and external software we use
author Paper <paper@paper.us.eu.org>
date Wed, 19 Jun 2024 14:02:11 -0400
parents 22f9aacf6ac1
children
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1 #include "sys/osx/dark_theme.h"
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2
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3 #include <objc/message.h>
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4 #include <objc/runtime.h>
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5
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6 #include <CoreFoundation/CoreFoundation.h>
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7
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8 namespace osx {
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9
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10 typedef id (*object_message_send)(id, SEL, ...);
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11 typedef id (*class_message_send)(Class, SEL, ...);
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12
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13 static const object_message_send obj_send = reinterpret_cast<object_message_send>(objc_msgSend);
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14 static const class_message_send cls_send = reinterpret_cast<class_message_send>(objc_msgSend);
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15
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16 static CFStringRef NSAppearanceNameAqua = nullptr;
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17 static CFStringRef NSAppearanceNameDarkAqua = nullptr;
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18
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19 static const CFStringRef kAppKitBundleID = CFSTR("com.apple.AppKit");
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20
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21 bool RetrieveAppearanceNames() {
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22 CFBundleRef appkit_bundle = CFBundleGetBundleWithIdentifier(kAppKitBundleID);
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23 if (!appkit_bundle)
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24 return false;
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25
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26 auto aqua_appearance = reinterpret_cast<CFStringRef*>(CFBundleGetDataPointerForName(appkit_bundle, CFSTR("NSAppearanceNameAqua")));
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27 if (!aqua_appearance)
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28 return false;
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29 NSAppearanceNameAqua = *aqua_appearance;
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30
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31 auto dark_aqua_appearance = reinterpret_cast<CFStringRef*>(
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32 CFBundleGetDataPointerForName(appkit_bundle, CFSTR("NSAppearanceNameDarkAqua")));
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33 if (!dark_aqua_appearance)
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34 return false;
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35 NSAppearanceNameDarkAqua = *dark_aqua_appearance;
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36
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37 return true;
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38 }
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39
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40 bool DarkThemeAvailable() {
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41 if (__builtin_available(macOS 10.14, *)) {
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42 return true;
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43 } else {
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44 return false;
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45 }
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46 }
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47
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48 bool IsInDarkTheme() {
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49 if (!DarkThemeAvailable())
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50 return false;
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51
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52 if (!NSAppearanceNameAqua || !NSAppearanceNameDarkAqua)
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53 if (!RetrieveAppearanceNames())
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54 return false;
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55
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56 // NSArray* array = @[NSAppearanceNameAqua, NSAppearanceNameDarkAqua];
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57 CFArrayRef array = []() -> CFArrayRef {
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58 CFStringRef refs[] = {NSAppearanceNameAqua, NSAppearanceNameDarkAqua};
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59 return CFArrayCreate(NULL, reinterpret_cast<const void**>(refs), 2, &kCFTypeArrayCallBacks);
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60 }();
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61
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62 // NSApplication* app = [NSApplication sharedApplication];
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63 const id app = cls_send(objc_getClass("NSApplication"), sel_getUid("sharedApplication"));
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64 if (!app)
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65 return false;
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66
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67 // NSAppearance* effectiveAppearance = [app effectiveAppearance];
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68 const id effectiveAppearance = obj_send(app, sel_getUid("effectiveAppearance"));
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69 if (!effectiveAppearance) {
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70 CFRelease(array);
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71 return false;
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72 }
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73
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74 // NSAppearance* appearance = [effectiveAppearance bestMatchFromAppearancesWithNames: array];
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75 const id appearance = obj_send(effectiveAppearance, sel_getUid("bestMatchFromAppearancesWithNames:"), array);
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76
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77 CFRelease(array);
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78
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79 if (!appearance)
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80 return false;
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81
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82 return CFEqual(appearance, NSAppearanceNameDarkAqua);
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83 }
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84
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85 bool SetToDarkTheme() {
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86 // https://stackoverflow.com/questions/55925862/how-can-i-set-my-os-x-application-theme-in-code
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87 if (!DarkThemeAvailable())
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88 return false;
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89
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90 if (!NSAppearanceNameAqua || !NSAppearanceNameDarkAqua)
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91 if (!RetrieveAppearanceNames())
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92 return false;
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93
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94 // NSApplication* app = [NSApplication sharedApplication];
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95 const id app = cls_send(objc_getClass("NSApplication"), sel_getUid("sharedApplication"));
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96 if (!app)
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97 return false;
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98
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99 // NSAppearance* appearance = [NSAppearance appearanceNamed: NSAppearanceNameDarkAqua];
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100 const id appearance =
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101 cls_send(objc_getClass("NSAppearance"), sel_getUid("appearanceNamed:"), NSAppearanceNameDarkAqua);
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102 if (!appearance)
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103 return false;
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104
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105 // [app setAppearance: appearance];
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106 obj_send(app, sel_getUid("setAppearance:"), appearance);
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107 return true;
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108 }
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109
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110 bool SetToLightTheme() {
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111 // https://stackoverflow.com/questions/55925862/how-can-i-set-my-os-x-application-theme-in-code
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112 if (!DarkThemeAvailable())
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113 return false;
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114
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115 if (!NSAppearanceNameAqua || !NSAppearanceNameDarkAqua)
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116 if (!RetrieveAppearanceNames())
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117 return false;
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118
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119 // NSApplication* app = [NSApplication sharedApplication];
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120 const id app = cls_send(objc_getClass("NSApplication"), sel_getUid("sharedApplication"));
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121 if (!app)
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122 return false;
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123
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124 // NSAppearance* appearance = [NSAppearance appearanceNamed: NSAppearanceNameDarkAqua];
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125 const id appearance = cls_send(objc_getClass("NSAppearance"), sel_getUid("appearanceNamed:"), NSAppearanceNameAqua);
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126 if (!appearance)
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127 return false;
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128
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129 // [app setAppearance: appearance];
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130 obj_send(app, sel_getUid("setAppearance:"), appearance);
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131 return true;
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132 }
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133
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134 void SetToAutoTheme() {
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135 if (!DarkThemeAvailable())
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136 return;
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137
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138 // NSApplication* app = [NSApplication sharedApplication];
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139 const id app = cls_send(objc_getClass("NSApplication"), sel_getUid("sharedApplication"));
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140 if (!app)
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141 return;
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142
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143 // [app setAppearance: null];
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144 obj_send(app, sel_getUid("setAppearance:"), nullptr);
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145 }
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146
8548dc425697 sys/osx: remove all objective-c++ stuff
Paper <mrpapersonic@gmail.com>
parents:
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147 } // namespace osx