Tue, 29 Oct 2024 10:37:14 +0100
clear context states before closing a window
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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 2016 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 <stdio.h> |
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30 | #include <stdlib.h> |
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31 | |
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32 | #include "range.h" |
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33 | #include "container.h" |
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34 | #include "../common/context.h" |
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35 | #include "../common/object.h" |
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36 | |
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37 | |
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38 | static UIWIDGET ui_scrollbar(UiObject *obj, UiOrientation orientation, UiRange *range, ui_callback f, void *userdata) { |
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39 | UiContainer *ct = uic_get_current_container(obj); |
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40 | |
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41 | int n = 0; |
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42 | Arg args[16]; |
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43 | XtSetArg(args[n], XmNorientation, orientation == UI_HORIZONTAL ? XmHORIZONTAL : XmVERTICAL); |
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44 | n++; |
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45 | XtSetArg (args[n], XmNmaximum, 10); |
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46 | n++; |
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47 | XtSetArg (args[n], XmNsliderSize, 1); |
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48 | n++; |
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49 | Widget parent = ct->prepare(ct, args, &n, FALSE); |
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50 | Widget scrollbar = XmCreateScrollBar(parent, "scrollbar", args, n); |
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51 | XtManageChild(scrollbar); |
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52 | ct->add(ct, scrollbar); |
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53 | |
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54 | if(range) { |
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55 | range->get = ui_scrollbar_get; |
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56 | range->set = ui_scrollbar_set; |
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57 | range->setrange = ui_scrollbar_setrange; |
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58 | range->setextent = ui_scrollbar_setextent; |
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59 | range->obj = scrollbar; |
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60 | } |
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61 | |
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62 | if(f) { |
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63 | UiEventData *event = cxMalloc( |
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64 | obj->ctx->allocator, |
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65 | sizeof(UiEventData)); |
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66 | event->obj = obj; |
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67 | event->userdata = userdata; |
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68 | event->callback = f; |
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69 | event->value = 0; |
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70 | XtAddCallback( |
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71 | scrollbar, |
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72 | XmNvalueChangedCallback, |
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73 | (XtCallbackProc)ui_scrollbar_callback, |
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74 | event); |
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75 | } |
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76 | |
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77 | return scrollbar; |
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78 | } |
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79 | |
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80 | UIWIDGET ui_hscrollbar(UiObject *obj, UiRange *range, ui_callback f, void *userdata) { |
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81 | return ui_scrollbar(obj, UI_HORIZONTAL, range, f, userdata); |
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82 | } |
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83 | |
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84 | UIWIDGET ui_vscrollbar(UiObject *obj, UiRange *range, ui_callback f, void *userdata) { |
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85 | return ui_scrollbar(obj, UI_VERTICAL, range, f, userdata); |
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86 | } |
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87 | |
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88 | void ui_scrollbar_callback(Widget scrollbar, UiEventData *event, XtPointer cdata) { |
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89 | UiEvent e; |
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90 | e.obj = event->obj; |
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91 | e.window = event->obj->window; |
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92 | e.document = event->obj->ctx->document; |
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93 | e.intval = event->value; |
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94 | event->callback(&e, event->userdata); |
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95 | } |
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96 | |
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97 | double ui_scrollbar_get(UiRange *range) { |
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98 | int intval; |
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99 | XtVaGetValues( |
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100 | range->obj, |
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101 | XmNvalue, |
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102 | &intval, |
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103 | NULL); |
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104 | double value = (double)intval / 10; |
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105 | range->value = value; |
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106 | return value; |
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107 | } |
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108 | |
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109 | void ui_scrollbar_set(UiRange *range, double value) { |
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110 | XtVaSetValues( |
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111 | range->obj, |
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112 | XmNvalue, |
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113 | (int)(value * 10), |
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114 | NULL); |
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115 | range->value = value; |
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116 | } |
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117 | |
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118 | void ui_scrollbar_setrange(UiRange *range, double min, double max) { |
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119 | XtVaSetValues( |
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120 | range->obj, |
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121 | XmNminimum, |
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122 | (int)(min * 10), |
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123 | XmNmaximum, |
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124 | (int)(max * 10), |
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125 | NULL); |
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126 | range->min = min; |
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127 | range->max = max; |
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128 | } |
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129 | |
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130 | void ui_scrollbar_setextent(UiRange *range, double extent) { |
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131 | XtVaSetValues( |
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132 | range->obj, |
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133 | XmNsliderSize, |
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134 | (int)(extent * 10), |
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135 | NULL); |
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136 | range->extent = extent; |
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137 | } |