ui/motif/range.c

Tue, 17 Oct 2023 21:00:48 +0200

author
Olaf Wintermann <olaf.wintermann@gmail.com>
date
Tue, 17 Oct 2023 21:00:48 +0200
branch
newapi
changeset 219
527a66c0afb2
parent 176
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permissions
-rw-r--r--

add label (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 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 }

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