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annotate src/sys/win32/dark_theme.cc @ 337:a7d4e5107531

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dep/animone: REFACTOR ALL THE THINGS 1: animone now has its own syntax divergent from anisthesia, making different platforms actually have their own sections 2: process names in animone are now called `comm' (this will probably break things). this is what its called in bsd/linux so I'm just going to use it everywhere 3: the X11 code now checks for the existence of a UTF-8 window title and passes it if available 4: ANYTHING THATS NOT LINUX IS 100% UNTESTED AND CAN AND WILL BREAK! I still actually need to test the bsd code. to be honest I'm probably going to move all of the bsds into separate files because they're all essentially different operating systems at this point
author Paper <paper@paper.us.eu.org>
date Wed, 19 Jun 2024 12:51:15 -0400
parents 862d0d8619f6
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1 #include "sys/win32/dark_theme.h"
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2
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3 #include <QApplication>
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4 #include <QOperatingSystemVersion>
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5 #include <QSettings>
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6 #include <QWidget>
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8 #include <iostream>
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9 #include <memory>
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11 #include <dwmapi.h>
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13 struct LibraryDeconstructor {
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14 using pointer = HINSTANCE;
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15 void operator()(pointer t) const { ::FreeLibrary(t); };
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16 };
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17
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18 using Library = std::unique_ptr<HINSTANCE, LibraryDeconstructor>;
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19
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20 class Dwmapi {
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21 public:
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22 Dwmapi() {
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23 /* load functions */
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24 library.reset(::LoadLibraryW(L"dwmapi.dll"));
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25 set_wind_attrib = reinterpret_cast<decltype(::DwmSetWindowAttribute)*>(
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26 GetProcAddress(library.get(), "DwmSetWindowAttribute"));
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27 }
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29 HRESULT SetWindowAttribute(HWND hWnd, DWORD key, LPCVOID data, DWORD sz_data) {
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30 if (!library.get())
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31 return E_POINTER;
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32
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33 /* GCC throws a fit here because C++ lacks a "generic" function pointer type.
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34 * Ignore. */
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35 if (!set_wind_attrib)
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36 return E_POINTER;
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37
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38 return set_wind_attrib(hWnd, key, data, sz_data);
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39 }
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41 protected:
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42 Library library = nullptr;
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43 decltype(::DwmSetWindowAttribute)* set_wind_attrib;
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44 };
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46 Dwmapi dwmapi;
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48 namespace win32 {
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49
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50 bool SetTitleBarToBlack(QWidget* win, bool enabled) {
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51 /* 19 and 20 are *both* DWMWA_USE_IMMERSIVE_DARK_MODE.
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52 *
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53 * It's 20 on newer versions of windows (i.e. win11 and late win10),
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54 * but it's 19 on very old versions of win10 nobody ought to be using anymore.
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55 */
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56 static constexpr DWORD DWMWA_USE_IMMERSIVE_DARK_MODE_OLD = 19;
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57 static constexpr DWORD DWMWA_USE_IMMERSIVE_DARK_MODE = 20;
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58
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59 BOOL b = enabled;
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61 {
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62 HRESULT result = dwmapi.SetWindowAttribute(reinterpret_cast<HWND>(win->winId()), DWMWA_USE_IMMERSIVE_DARK_MODE,
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63 &b, sizeof(b));
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64 if (result == S_OK)
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65 return b;
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66 }
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68 {
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69 HRESULT result = dwmapi.SetWindowAttribute(reinterpret_cast<HWND>(win->winId()),
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70 DWMWA_USE_IMMERSIVE_DARK_MODE_OLD, &b, sizeof(b));
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71 if (result == S_OK)
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72 return b;
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73 }
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75 return b;
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76 }
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78 void SetTitleBarsToBlack(bool enabled) {
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79 for (QWidget* widget : qApp->topLevelWidgets()) {
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80 SetTitleBarToBlack(widget, enabled);
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81 }
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82 }
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83
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84 bool DarkThemeAvailable() {
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85 const auto& ver = QOperatingSystemVersion::current();
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86 return (ver.majorVersion() > 10) ? true : (ver.majorVersion() == 10 && ver.microVersion() >= 17763);
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87 }
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88
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89 bool IsInDarkTheme() {
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90 QSettings settings("HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
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91 QSettings::NativeFormat);
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92 return settings.value("AppsUseLightTheme", 1).toInt() == 0;
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93 }
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95 } // namespace win32