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1 #include "stdafx.h"
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2 #include "CEditWithButtons.h"
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3
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4
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5 void CEditWithButtons::AddMoreButton(std::function<void()> f) {
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6 AddButton(L"more", f, nullptr, L"\x2026");
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7 }
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8 void CEditWithButtons::AddClearButton(const wchar_t * clearVal, bool bHandleEsc) {
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9 std::wstring clearValCopy(clearVal);
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10 auto handler = [this, clearValCopy] {
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11 this->SetWindowText(clearValCopy.c_str());
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12 };
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13 auto condition = [clearValCopy](const wchar_t * txt) -> bool {
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14 return clearValCopy != txt;
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15 };
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16 // Present "clear" to accessibility APIs but actually draw a multiplication x sign
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17 AddButton(L"clear", handler, condition, L"\x00D7");
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18
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19 if (bHandleEsc) {
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20 this->onEscKey = handler;
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21 }
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22
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23 }
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24
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25 void CEditWithButtons::AddButton(const wchar_t * str, handler_t handler, condition_t condition, const wchar_t * drawAlternateText) {
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26 PFC_ASSERT(GetStyle() & WS_CLIPCHILDREN);
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27 Button_t btn;
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28 btn.handler = handler;
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29 btn.title = str;
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30 btn.condition = condition;
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31 btn.visible = EvalCondition(btn, nullptr);
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32
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33 if (drawAlternateText != nullptr) {
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34 btn.titleDraw = drawAlternateText;
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35 }
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36
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37 m_buttons.push_back(std::move(btn));
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38 RefreshButtons();
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39 }
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40
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41 CRect CEditWithButtons::RectOfButton(const wchar_t * text) {
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42 for (auto i = m_buttons.begin(); i != m_buttons.end(); ++i) {
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43 if (i->title == text && i->wnd != NULL) {
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44 CRect rc;
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45 if (i->wnd.GetWindowRect(rc)) return rc;
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46 }
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47 }
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48 return CRect();
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49 }
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50
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51 void CEditWithButtons::TabCycleButtons(HWND wnd) {
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52 for (auto i = m_buttons.begin(); i != m_buttons.end(); ++i) {
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53 if (i->wnd == wnd) {
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54 if (IsShiftPressed()) {
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55 // back
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56 for (;; ) {
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57 if (i == m_buttons.begin()) {
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58 TabFocusThis(m_hWnd); break;
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59 } else {
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60 --i;
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61 if (i->visible) {
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62 TabFocusThis(i->wnd);
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63 break;
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64 }
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65 }
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66 }
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67 } else {
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68 // forward
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69 for (;; ) {
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70 ++i;
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71 if (i == m_buttons.end()) {
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72 TabFocusThis(m_hWnd);
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73 TabFocusPrevNext(false);
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74 break;
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75 } else {
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76 if (i->visible) {
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77 TabFocusThis(i->wnd);
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78 break;
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79 }
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80 }
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81 }
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82 }
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83
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84 return;
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85 }
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86 }
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87 }
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88
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89
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90 bool CEditWithButtons::ButtonWantTab(HWND wnd) {
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91 if (IsShiftPressed()) return true;
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92 if (m_buttons.size() == 0) return false; // should not be possible
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93 auto last = m_buttons.rbegin();
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94 if (wnd == last->wnd) return false; // not for last button
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95 return true;
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96 }
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97 bool CEditWithButtons::EvalCondition(Button_t & btn, const wchar_t * newText) {
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98 if (!btn.condition) return true;
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99 if (newText != nullptr) return btn.condition(newText);
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100 TCHAR text[256] = {};
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101 GetWindowText(text, 256);
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102 text[255] = 0;
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103 return btn.condition(text);
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104 }
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105 void CEditWithButtons::RefreshConditions(const wchar_t * newText) {
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106 bool changed = false;
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107 for (auto i = m_buttons.begin(); i != m_buttons.end(); ++i) {
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108 bool status = EvalCondition(*i, newText);
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109 if (status != i->visible) {
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110 i->visible = status; changed = true;
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111 }
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112 }
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113 if (changed) {
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114 Layout();
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115 }
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116 }
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117
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118 void CEditWithButtons::Layout(CSize size, CFontHandle fontSetMe) {
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119 if (m_buttons.size() == 0) return;
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120
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121 int walk = size.cx;
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122
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123 HDWP dwp = BeginDeferWindowPos((int)m_buttons.size());
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124 for (auto iter = m_buttons.rbegin(); iter != m_buttons.rend(); ++iter) {
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125 if (!iter->visible) {
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126 if (::GetFocus() == iter->wnd) {
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127 this->SetFocus();
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128 }
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129 ::DeferWindowPos(dwp, iter->wnd, NULL, 0, 0, 0, 0, SWP_NOZORDER | SWP_HIDEWINDOW | SWP_NOMOVE | SWP_NOSIZE | SWP_NOCOPYBITS);
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130 continue;
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131 }
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132
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133 if (iter->wnd == NULL) {
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134 auto* b = &iter->wnd;
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135 b->Create(*this, NULL, iter->title.c_str());
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136 if (iter->titleDraw.length() > 0) b->DrawAlternateText(iter->titleDraw.c_str());
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137 CFontHandle font = fontSetMe;
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138 if (font == NULL) font = GetFont();
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139 b->SetFont(font);
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140 b->ClickHandler = iter->handler;
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141 b->CtlColorHandler = [=](CDCHandle dc) -> HBRUSH {
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142 return this->OnColorBtn(dc, NULL);
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143 };
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144 b->TabCycleHandler = [=](HWND wnd) {
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145 TabCycleButtons(wnd);
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146 };
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147 b->WantTabCheck = [=](HWND wnd) -> bool {
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148 return ButtonWantTab(wnd);
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149 };
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150 if (!IsWindowEnabled()) b->EnableWindow(FALSE);
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151 } else if (fontSetMe) {
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152 iter->wnd.SetFont(fontSetMe);
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153 }
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154
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155 unsigned delta = MeasureButton(*iter);
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156 int left = walk - delta;
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157
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158 if (iter->wnd != NULL) {
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159 CRect rc;
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160 rc.top = 0;
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161 rc.bottom = size.cy;
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162 rc.left = left;
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163 rc.right = walk;
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164 ::DeferWindowPos(dwp, iter->wnd, NULL, rc.left, rc.top, rc.Width(), rc.Height(), SWP_NOZORDER | SWP_SHOWWINDOW | SWP_NOCOPYBITS);
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165 }
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166
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167 walk = left;
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168 }
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169 EndDeferWindowPos(dwp);
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170 this->SetMargins(0, size.cx - walk, EC_RIGHTMARGIN);
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171 }
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172
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173 unsigned CEditWithButtons::MeasureButton(Button_t const & button) {
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174 if (m_fixedWidthAuto && m_fixedWidth == 0) {
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175 CWindowDC dc(*this);
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176 SelectObjectScope fontScope(dc, GetFont());
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177 SIZE sz = {};
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178 WIN32_OP_D( dc.GetTextExtent(L"#", 1, &sz) );
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179 m_fixedWidth = MulDiv(sz.cx, 3, 2);
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180 }
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181 if (m_fixedWidth != 0) return m_fixedWidth;
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182
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183 return button.wnd.Measure();
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184 }
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185
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186 void CEditWithButtons::OnSetFont(CFontHandle font, BOOL bRedraw) {
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187 (void)bRedraw;
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188
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189 if ( m_fixedWidthAuto ) m_fixedWidth = 0; // require re-calculation
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190
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191 DefWindowProc();
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192 CRect rc;
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193 if (GetClientRect(&rc)) {
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194 Layout(rc.Size(), font);
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195 }
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196 }
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