ui/winui/button.cpp

Fri, 20 Oct 2023 16:34:33 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Fri, 20 Oct 2023 16:34:33 +0200
branch
newapi
changeset 224
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parent 213
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child 230
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permissions
-rw-r--r--

add minimal working dnd implementation (WinUI3)

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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2023 Olaf Wintermann. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 */
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28
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29 #include "pch.h"
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30
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31 #include "button.h"
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33 #include "util.h"
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34 #include "container.h"
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35 #include "icons.h"
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36
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37 #include "../common/object.h"
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38 #include "../common/context.h"
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39
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40 using namespace winrt;
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41 using namespace Microsoft::UI::Xaml;
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42 using namespace Microsoft::UI::Xaml::Controls;
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43 using namespace Windows::UI::Xaml::Interop;
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44 using namespace winrt::Windows::Foundation;
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45 using namespace winrt::Microsoft::UI::Xaml::Controls::Primitives;
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48
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49 static void set_button_label(ButtonBase button, const char* label, const char* stockid) {
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50 if (label) {
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51 wchar_t* wlabel = str2wstr(label, nullptr);
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52 button.Content(box_value(wlabel));
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53 free(wlabel);
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54 }
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55 // TODO: stockid
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56 }
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57
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58
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59 UIWIDGET ui_button_create(UiObject* obj, UiButtonArgs args) {
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60 UiObject* current = uic_current_obj(obj);
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61
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62 // create button with label
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63 Button button = Button();
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64 set_button_label(button, args.label, args.stockid);
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65
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66 // create toolkit wrapper object and register destructor
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67 UIElement elm = button;
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68 UiWidget* widget = new UiWidget(elm);
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69 ui_context_add_widget_destructor(current->ctx, widget);
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71 // register callback
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72 if (args.onclick) {
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73 ui_callback cbfunc = args.onclick;
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74 void* cbdata = args.onclickdata;
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75 button.Click([cbfunc, cbdata, obj](IInspectable const& sender, RoutedEventArgs) {
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76 UiEvent evt;
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77 evt.obj = obj;
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78 evt.window = obj->window;
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79 evt.document = obj->ctx->document;
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80 evt.eventdata = nullptr;
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81 evt.intval = 0;
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82 cbfunc(&evt, cbdata);
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83 });
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84 }
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85
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86 // add button to current container
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87 UI_APPLY_LAYOUT1(current, args);
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88
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89 current->container->Add(button, false);
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90
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91 return widget;
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92 }
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93
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95 void togglebutton_register_checked_observers(ToggleButton button, UiObject* obj, UiVar* var) {
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96 button.Checked([button, obj, var](IInspectable const& sender, RoutedEventArgs) {
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97 UiInteger* i = (UiInteger*)var->value;
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98 UiEvent evt = ui_create_int_event(obj, i->get(i));
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99 ui_notify_evt(i->observers, &evt);
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100 });
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101 }
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102
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103 void togglebutton_register_unchecked_observers(ToggleButton button, UiObject* obj, UiVar* var) {
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104 button.Unchecked([button, obj, var](IInspectable const& sender, RoutedEventArgs) {
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105 UiInteger* i = (UiInteger*)var->value;
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106 UiEvent evt = ui_create_int_event(obj, i->get(i));
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107 ui_notify_evt(i->observers, &evt);
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108 });
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109 }
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110
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111 void togglebutton_register_callback(ToggleButton button, UiObject *obj, UiToggleArgs& args) {
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112 ui_callback callback = args.onchange;
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113 void* cbdata = args.onchangedata;
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114 if (callback) {
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115 button.Checked([button, obj, callback, cbdata](IInspectable const& sender, RoutedEventArgs) {
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116 UiEvent evt = ui_create_int_event(obj, true);
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117 callback(&evt, cbdata);
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118 });
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119 button.Unchecked([button, obj, callback, cbdata](IInspectable const& sender, RoutedEventArgs) {
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120 UiEvent evt = ui_create_int_event(obj, false);
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121 callback(&evt, cbdata);
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122 });
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123 }
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124 }
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125
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126 // for some stupid reason the ToggleSwitch is not a ToggleButton and we need to write the same
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127 // code again, because although everything is basically the same, it is named differently
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128 static void switch_register_observers(ToggleSwitch button, UiObject* obj, UiVar* var) {
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129 button.Toggled([button, obj, var](IInspectable const& sender, RoutedEventArgs) {
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130 UiInteger* i = (UiInteger*)var->value;
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131 UiEvent evt = ui_create_int_event(obj, i->get(i));
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132 ui_notify_evt(i->observers, &evt);
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133 });
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134 }
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135
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136 static void switch_register_callback(ToggleSwitch button, UiObject* obj, UiToggleArgs& args) {
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137 ui_callback callback = args.onchange;
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138 void* cbdata = args.onchangedata;
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139 if (callback) {
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140 button.Toggled([button, obj, callback, cbdata](IInspectable const& sender, RoutedEventArgs) {
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141 UiEvent evt = ui_create_int_event(obj, button.IsOn());
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142 callback(&evt, cbdata);
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143 });
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144 }
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145 }
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146
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147
187
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148 static UIWIDGET create_togglebutton(UiObject *obj, ToggleButton button, UiToggleArgs args) {
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149 UiObject* current = uic_current_obj(obj);
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150
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151 // set label
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152 set_button_label(button, args.label, args.stockid);
189
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153 togglebutton_register_callback(button, obj, args);
187
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154
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155 // create toolkit wrapper object and register destructor
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156 UIElement elm = button;
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157 UiWidget* widget = new UiWidget(elm);
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158 ui_context_add_widget_destructor(current->ctx, widget);
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159
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160 // bind variable
192
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161 UiVar* var = uic_widget_var(obj->ctx, current->ctx, args.value, args.varname, UI_VAR_INTEGER);
187
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162 if (var) {
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163 UiInteger* value = (UiInteger*)var->value;
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164 value->obj = widget;
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165 value->get = ui_toggle_button_get;
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166 value->set = ui_toggle_button_set;
189
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167
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168 // listener for notifying observers
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169 togglebutton_register_checked_observers(button, obj, var);
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170 togglebutton_register_unchecked_observers(button, obj, var);
187
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171 }
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172
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173 // add button to current container
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174 UI_APPLY_LAYOUT1(current, args);
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175
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176 current->container->Add(button, false);
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177
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178 return widget;
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179 }
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180
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181 UIWIDGET ui_togglebutton_create(UiObject* obj, UiToggleArgs args) {
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182 ToggleButton button = ToggleButton();
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183 return create_togglebutton(obj, button, args);
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184 }
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185
186
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186 UIWIDGET ui_checkbox_create(UiObject* obj, UiToggleArgs args) {
187
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187 CheckBox button = CheckBox();
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188 return create_togglebutton(obj, button, args);
186
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189 }
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190
191
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191 UIWIDGET ui_switch_create(UiObject* obj, UiToggleArgs args) {
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192 ToggleSwitch button = ToggleSwitch();
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193 if (args.label) {
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194 wchar_t* wlabel = str2wstr(args.label, nullptr);
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195 button.Header(box_value(wlabel));
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196 free(wlabel);
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197 }
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198 switch_register_callback(button, obj, args);
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199
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200 UiObject* current = uic_current_obj(obj);
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201
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202 // create toolkit wrapper object and register destructor
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203 UIElement elm = button;
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204 UiWidget* widget = new UiWidget(elm);
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205 ui_context_add_widget_destructor(current->ctx, widget);
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206
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207 // bind variable
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208 UiVar* var = nullptr;
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209 if (args.value) {
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210 var = uic_create_value_var(current->ctx, args.value);
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211 }
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212 else if (args.varname) {
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213 var = uic_create_var(obj->ctx, args.varname, UI_VAR_INTEGER);
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214 }
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215 if (var) {
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216 UiInteger* value = (UiInteger*)var->value;
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217 value->obj = widget;
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218 value->get = ui_toggle_button_get;
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219 value->set = ui_toggle_button_set;
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220
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221 // listener for notifying observers
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222 switch_register_observers(button, obj, var);
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223 }
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224
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225 // add button to current container
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226 UI_APPLY_LAYOUT1(current, args);
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227
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228 current->container->Add(button, false);
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229
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230 return widget;
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231 }
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232
188
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233 UIWIDGET ui_radiobutton_create(UiObject* obj, UiToggleArgs args) {
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234 RadioButton button = RadioButton();
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235
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236 UiObject* current = uic_current_obj(obj);
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237
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238 // set label
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239 set_button_label(button, args.label, args.stockid);
189
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240 togglebutton_register_callback(button, obj, args);
188
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241
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242 // create toolkit wrapper object and register destructor
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243 UIElement elm = button;
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244 UiWidget* widget = new UiWidget(elm);
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245 ui_context_add_widget_destructor(current->ctx, widget);
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246
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247 UiVar* var = nullptr;
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248 if (args.value) {
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249 var = uic_create_value_var(current->ctx, args.value);
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250 }
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251 else if (args.varname) {
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252 var = uic_create_var(obj->ctx, args.varname, UI_VAR_INTEGER);
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253 }
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254
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255 // bind radio button to the value
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256 if (var) {
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257 UiInteger* value = (UiInteger*)var->value;
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258
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259 // store a list of radio buttons in the value
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260 CxList* radioButtons = (CxList*) (value->obj ? value->obj : cxLinkedListCreate(current->ctx->allocator, NULL, CX_STORE_POINTERS));
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261 // get or create the group name
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262 static int groupCount = 0;
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263 winrt::hstring groupName;
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264 if (radioButtons->size == 0) {
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265 groupName = winrt::to_hstring(groupCount++);
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266 } else {
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267 UiWidget* firstButtonWidget = (UiWidget*)cxListAt(radioButtons, 0);
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268 RadioButton firstRadioButton = firstButtonWidget->uielement.as<RadioButton>();
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269 groupName = firstRadioButton.GroupName();
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270 }
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271
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272 // set the group name for the new radiobutton
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273 cxListAdd(radioButtons, widget);
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274 button.GroupName(groupName);
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275
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276 value->obj = radioButtons;
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277 value->get = ui_radio_button_get;
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278 value->set = ui_radio_button_set;
189
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279
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280 // listener for notifying observers (only checked, not unchecked)
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281 togglebutton_register_checked_observers(button, obj, var);
188
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282 }
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283
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284 // add button to current container
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285 UI_APPLY_LAYOUT1(current, args);
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286
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287 current->container->Add(button, false);
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288
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289 return widget;
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290 }
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291
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292
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293 int64_t ui_toggle_button_get(UiInteger* integer) {
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294 UiWidget* widget = (UiWidget*)integer->obj;
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295 ToggleButton toggleButton = widget->uielement.as<ToggleButton>();
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296 int val = toggleButton.IsChecked().GetBoolean();
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297 integer->value = val;
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298 return val;
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299 }
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300
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301 void ui_toggle_button_set(UiInteger* integer, int64_t value) {
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302 UiWidget* widget = (UiWidget*)integer->obj;
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303 ToggleButton toggleButton = widget->uielement.as<ToggleButton>();
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304 toggleButton.IsChecked((bool)value);
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305 integer->value = value;
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306 }
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307
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308 int64_t ui_switch_get(UiInteger * integer) {
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309 UiWidget* widget = (UiWidget*)integer->obj;
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310 ToggleSwitch toggleButton = widget->uielement.as<ToggleSwitch>();
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311 int val = toggleButton.IsOn();
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312 integer->value = val;
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313 return val;
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314 }
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315
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316 void ui_switch_set(UiInteger * integer, int64_t value) {
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317 UiWidget* widget = (UiWidget*)integer->obj;
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318 ToggleSwitch toggleButton = widget->uielement.as<ToggleSwitch>();
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319 toggleButton.IsOn((bool)value);
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320 integer->value = value;
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321 }
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322
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323 int64_t ui_radio_button_get(UiInteger * integer) {
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324 CxList* list = (CxList*)integer->obj;
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325 CxIterator i = cxListIterator(list);
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326 int selection = -1;
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327 cx_foreach(UiWidget*, widget, i) {
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328 ToggleButton button = widget->uielement.as<ToggleButton>();
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329 if (button.IsChecked().GetBoolean()) {
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330 selection = i.index;
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331 break;
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332 }
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333 }
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334 integer->value = selection;
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335 return selection;
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336 }
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337
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338 void ui_radio_button_set(UiInteger * integer, int64_t value) {
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339 CxList* list = (CxList*)integer->obj;
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340 UiWidget* widget = (UiWidget*)cxListAt(list, value);
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341 if (widget) {
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342 ToggleButton button = widget->uielement.as<ToggleButton>();
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343 button.IsChecked(true);
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344 integer->value = value;
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345 }
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346 }

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