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1 #pragma once
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2
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3 #include <functional>
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4 #include <vsstyle.h>
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5 #include "wtl-pp.h"
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6 #include "win32_op.h"
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7 #include "DarkMode.h"
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8
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9 typedef CWinTraits<WS_CHILD|WS_TABSTOP,0> CButtonLiteTraits;
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10
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11 class CButtonLite : public CWindowImpl<CButtonLite, CWindow, CButtonLiteTraits > {
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12 public:
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13 BEGIN_MSG_MAP_EX(CButtonLite)
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14 MESSAGE_RANGE_HANDLER_EX(WM_MOUSEFIRST, WM_MOUSELAST, MousePassThru)
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15 MSG_WM_MOUSELEAVE(OnMouseLeave)
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16 MSG_WM_SETTEXT(OnSetText)
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17 MSG_WM_PAINT( OnPaint )
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18 MSG_WM_MOUSEMOVE(OnMouseMove)
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19 MSG_WM_LBUTTONDOWN(OnLButtonDown)
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20 MSG_WM_SETFOCUS(OnSetFocus)
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21 MSG_WM_KILLFOCUS(OnKillFocus)
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22 MSG_WM_KEYDOWN(OnKeyDown)
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23 MSG_WM_KEYUP(OnKeyUp)
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24 MSG_WM_CHAR(OnChar)
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25 MSG_WM_ENABLE(OnEnable)
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26 MESSAGE_HANDLER_EX(WM_GETDLGCODE, OnGetDlgCode)
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27 MSG_WM_SETFONT(OnSetFont)
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28 MSG_WM_GETFONT(OnGetFont)
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29 MSG_WM_CREATE(OnCreate)
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30 END_MSG_MAP()
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31 std::function<void () > ClickHandler;
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32
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33 unsigned Measure() const {
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34 auto font = myGetFont();
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35 LOGFONT lf;
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36 WIN32_OP_D(font.GetLogFont(lf));
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37 MakeBoldFont( lf );
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38 CFont bold;
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39 WIN32_OP_D(bold.CreateFontIndirect(&lf));
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40 CWindowDC dc(*this);
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41 auto oldFont = dc.SelectFont( bold );
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42 CSize size (0,0);
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43
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44 {
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45 CString measure;
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46 measure = L"#";
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47 measure += m_textDrawMe;
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48 WIN32_OP_D(dc.GetTextExtent(measure, measure.GetLength(), &size));
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49 }
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50
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51 dc.SelectFont( oldFont );
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52
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53 return size.cx;
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54 }
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55 std::function< void (HWND) > TabCycleHandler;
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56 std::function< HBRUSH (CDCHandle) > CtlColorHandler;
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57 std::function< bool (HWND) > WantTabCheck;
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58 CWindow WndCtlColorTarget;
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59
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60 // Rationale: sometimes you want a different text to be presented to accessibility APIs than actually drawn
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61 // For an example, a clear button looks best with a multiplication sign, but the narrator should say "clear" or so when focused
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62 void DrawAlternateText( const wchar_t * textDrawMe ) {
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63 m_textDrawMe = textDrawMe;
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64 }
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65
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66 protected:
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67 LRESULT MousePassThru(UINT cMsg, WPARAM cFlags, LPARAM lParam) {
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68 SetMsgHandled(FALSE);
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69 CPoint cPoint(lParam);
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70 const DWORD maskButtons = MK_LBUTTON | MK_RBUTTON | MK_MBUTTON | MK_XBUTTON1 | MK_XBUTTON2;
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71 if (cMsg == WM_MOUSEWHEEL || cMsg == WM_MOUSEHWHEEL || (cFlags & maskButtons) != 0) {
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72 ToggleHot(false);
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73 }
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74 if (cMsg == WM_MOUSEWHEEL || cMsg == WM_MOUSEHWHEEL) {
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75 TogglePressed(false);
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76 }
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77 if (cMsg == WM_LBUTTONUP) {
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78 bool wasPressed = m_pressed;
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79 TogglePressed(false);
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80 if (wasPressed) OnClicked();
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81 SetMsgHandled(TRUE);
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82 }
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83 return 0;
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84 }
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85 CFontHandle m_font;
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86 void OnSetFont(HFONT font, BOOL bRedraw) {
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87 m_font = font; if (bRedraw) Invalidate();
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88 }
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89 HFONT OnGetFont() {
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90 return m_font;
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91 }
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92 LRESULT OnGetDlgCode(UINT, WPARAM wp, LPARAM) {
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93 if ( wp == VK_TAB && TabCycleHandler != NULL) {
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94 if ( WantTabCheck == NULL || WantTabCheck(m_hWnd) ) {
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95 TabCycleHandler( m_hWnd );
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96 return DLGC_WANTTAB;
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97 }
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98 }
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99 SetMsgHandled(FALSE); return 0;
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100 }
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101 void OnChar(UINT, UINT, UINT) {
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102 }
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103 void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) {
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104 (void)nRepCnt; (void)nFlags;
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105 switch(nChar) {
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106 case VK_SPACE:
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107 case VK_RETURN:
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108 TogglePressed(true); break;
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109 }
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110 }
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111 void OnKeyUp(UINT nChar, UINT nRepCnt, UINT nFlags) {
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112 (void)nRepCnt; (void)nFlags;
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113 switch(nChar) {
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114 case VK_SPACE:
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115 case VK_RETURN:
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116 TogglePressed(false);
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117 OnClicked();
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118 break;
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119 }
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120 }
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121 void OnSetFocus(CWindow) {
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122 m_focused = true; Invalidate();
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123 }
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124 void OnKillFocus(CWindow) {
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125 m_focused = false; Invalidate();
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126 }
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127 CFontHandle myGetFont() const {
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128 auto f = GetFont();
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129 if ( f == NULL ) f = (HFONT) GetStockObject(DEFAULT_GUI_FONT);
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130 return f;
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131 }
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132 static void MakeBoldFont(LOGFONT & lf ) {
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133 lf.lfWeight += 300;
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134 if (lf.lfWeight > 1000 ) lf.lfWeight = 1000;
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135 }
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136
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137 CWindow GetCtlColorTarget() {
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138 CWindow target = WndCtlColorTarget;
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139 if (target == NULL) target = GetParent();
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140 return target;
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141 }
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142 virtual void DrawBackground( CDCHandle dc, CRect rcClient ) {
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143 {
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144 HBRUSH brush = NULL;
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145 if (CtlColorHandler) {
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146 brush = CtlColorHandler(dc);
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147 } else {
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148 brush = (HBRUSH)GetCtlColorTarget().SendMessage(WM_CTLCOLORBTN, (WPARAM)dc.m_hDC, (LPARAM)this->m_hWnd);
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149 }
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150 if (brush != NULL) {
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151 dc.FillRect(rcClient, brush);
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152 dc.SetBkMode(TRANSPARENT);
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153 }
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154 }
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155 if ( IsPressed() ) {
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156 CTheme theme;
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157 if (theme.OpenThemeData(*this, L"BUTTON" )) {
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158 DrawThemeBackground(theme, dc, BP_PUSHBUTTON, PBS_PRESSED, rcClient, rcClient );
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159 } else {
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160 DrawFrameControl( dc, rcClient, DFC_BUTTON, DFCS_PUSHED );
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161 }
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162 } else if (m_hot) {
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163 CTheme theme;
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164 if (theme.OpenThemeData(*this, L"BUTTON")) {
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165 DrawThemeBackground(theme, dc, BP_PUSHBUTTON, PBS_HOT, rcClient, rcClient);
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166 } else {
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167 DrawFrameControl(dc, rcClient, DFC_BUTTON, DFCS_HOT);
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168 }
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169 }
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170 }
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171
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172 virtual void OnPaint(CDCHandle) {
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173 CPaintDC pdc(*this);
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174
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175 CRect rcClient;
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176 if (! GetClientRect( &rcClient ) ) return;
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177
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178 auto font = myGetFont();
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179 /*
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180 CFont fontOverride;
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181 if ( IsPressed() ) {
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182 LOGFONT lf;
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183 font.GetLogFont( lf );
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184 MakeBoldFont( lf );
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185 fontOverride.CreateFontIndirect( & lf );
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186 font = fontOverride;
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187 }
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188 */
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189 HFONT oldFont = pdc.SelectFont( font );
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190
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191 DrawBackground( pdc.m_hDC, rcClient );
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192
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193 pdc.SetBkMode( TRANSPARENT );
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194 if ( !IsWindowEnabled() ) {
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195 pdc.SetTextColor( DarkMode::GetSysColor(COLOR_GRAYTEXT) );
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196 } else if ( m_focused ) {
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197 pdc.SetTextColor( DarkMode::GetSysColor(COLOR_HIGHLIGHT) );
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198 }
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199 pdc.DrawText( m_textDrawMe, m_textDrawMe.GetLength(), &rcClient, DT_VCENTER | DT_CENTER | DT_SINGLELINE | DT_NOPREFIX );
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200
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201 pdc.SelectFont( oldFont );
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202 }
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203 virtual void OnClicked() {
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204 if ( ClickHandler ) {
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205 ClickHandler();
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206 } else {
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207 GetParent().PostMessage( WM_COMMAND, MAKEWPARAM( this->GetDlgCtrlID(), BN_CLICKED ), (LPARAM) m_hWnd );
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208 }
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209 }
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210 bool IsPressed() {return m_pressed; }
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211 private:
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212 int OnCreate(LPCREATESTRUCT lpCreateStruct) {
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213 DarkMode::ApplyDarkThemeCtrl(*this, DarkMode::IsDialogDark(GetCtlColorTarget(), WM_CTLCOLORBTN));
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214 if ( lpCreateStruct->lpszName != nullptr ) this->m_textDrawMe = lpCreateStruct->lpszName;
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215 SetMsgHandled(FALSE); return 0;
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216 }
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217 void OnEnable(BOOL) {
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218 Invalidate(); SetMsgHandled(FALSE);
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219 }
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220 void ToggleHot( bool bHot ) {
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221 if ( bHot != m_hot ) {
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222 m_hot = bHot; Invalidate();
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223 }
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224 }
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225 void OnMouseMove(UINT nFlags, CPoint) {
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226 const DWORD maskButtons = MK_LBUTTON | MK_RBUTTON | MK_MBUTTON | MK_XBUTTON1 | MK_XBUTTON2;
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227 if ((nFlags & maskButtons) != 0) return;
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228 ToggleHot(true);
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229 TrackMouseLeave();
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230 }
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231 void OnLButtonDown(UINT nFlags, CPoint) {
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232 const DWORD maskButtons = MK_LBUTTON | MK_RBUTTON | MK_MBUTTON | MK_XBUTTON1 | MK_XBUTTON2;
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233 if ( ( nFlags & maskButtons ) != MK_LBUTTON ) return;
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234 TogglePressed( true );
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235 TrackMouseLeave();
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236 }
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237 void TogglePressed( bool bPressed ) {
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238 if ( bPressed != m_pressed ) {
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239 m_pressed = bPressed; Invalidate();
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240 }
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241 }
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242 int OnSetText(LPCTSTR lpstrText) {
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243 m_textDrawMe = lpstrText;
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244 Invalidate(); SetMsgHandled(FALSE);
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245 return 0;
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246 }
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247 void TrackMouseLeave() {
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248 TRACKMOUSEEVENT tme = { sizeof(tme) };
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249 tme.dwFlags = TME_LEAVE;
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250 tme.hwndTrack = m_hWnd;
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251 TrackMouseEvent(&tme);
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252 }
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253 void OnMouseLeave() {
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254 ToggleHot(false); TogglePressed(false);
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255 }
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256
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257 bool m_pressed = false, m_focused = false, m_hot = false;
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258 CString m_textDrawMe;
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259 };
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