comparison: ui/gtk/range.c
ui/gtk/range.c
- changeset 0
- 2483f517c562
- child 32
- e5f4d8af567e
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| -1:000000000000 | 0:2483f517c562 |
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| 1 /* | |
| 2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. | |
| 3 * | |
| 4 * Copyright 2017 Olaf Wintermann. All rights reserved. | |
| 5 * | |
| 6 * Redistribution and use in source and binary forms, with or without | |
| 7 * modification, are permitted provided that the following conditions are met: | |
| 8 * | |
| 9 * 1. Redistributions of source code must retain the above copyright | |
| 10 * notice, this list of conditions and the following disclaimer. | |
| 11 * | |
| 12 * 2. Redistributions in binary form must reproduce the above copyright | |
| 13 * notice, this list of conditions and the following disclaimer in the | |
| 14 * documentation and/or other materials provided with the distribution. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" | |
| 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE | |
| 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR | |
| 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF | |
| 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS | |
| 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN | |
| 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE | |
| 26 * POSSIBILITY OF SUCH DAMAGE. | |
| 27 */ | |
| 28 | |
| 29 #include <stdio.h> | |
| 30 #include <stdlib.h> | |
| 31 | |
| 32 #include "range.h" | |
| 33 #include "container.h" | |
| 34 #include "../common/context.h" | |
| 35 #include "../common/object.h" | |
| 36 | |
| 37 | |
| 38 static UIWIDGET ui_scrollbar(UiObject *obj, UiOrientation orientation, UiRange *range, ui_callback f, void *userdata) { | |
| 39 #ifdef UI_GTK3 | |
| 40 GtkWidget *scrollbar = gtk_scrollbar_new(orientation == UI_HORIZONTAL ? GTK_ORIENTATION_HORIZONTAL : GTK_ORIENTATION_VERTICAL, NULL); | |
| 41 #else | |
| 42 GtkWidget *scrollbar; | |
| 43 if(orientation == UI_HORIZONTAL) { | |
| 44 scrollbar = gtk_hscrollbar_new(NULL); | |
| 45 } else { | |
| 46 scrollbar = gtk_hscrollbar_new(NULL); | |
| 47 } | |
| 48 #endif | |
| 49 | |
| 50 if(range) { | |
| 51 range->get = ui_scrollbar_get; | |
| 52 range->set = ui_scrollbar_set; | |
| 53 range->setrange = ui_scrollbar_setrange; | |
| 54 range->setextent = ui_scrollbar_setextent; | |
| 55 range->obj = scrollbar; | |
| 56 } | |
| 57 | |
| 58 if(f) { | |
| 59 UiEventData *event = malloc(sizeof(UiEventData)); | |
| 60 event->obj = obj; | |
| 61 event->userdata = userdata; | |
| 62 event->callback = f; | |
| 63 event->value = 0; | |
| 64 | |
| 65 g_signal_connect( | |
| 66 G_OBJECT(scrollbar), | |
| 67 "value-changed", | |
| 68 G_CALLBACK(ui_scrollbar_value_changed), | |
| 69 event); | |
| 70 g_signal_connect( | |
| 71 scrollbar, | |
| 72 "destroy", | |
| 73 G_CALLBACK(ui_destroy_userdata), | |
| 74 event); | |
| 75 } | |
| 76 | |
| 77 UiContainer *ct = uic_get_current_container(obj); | |
| 78 ct->add(ct, scrollbar, FALSE); | |
| 79 | |
| 80 return scrollbar; | |
| 81 } | |
| 82 | |
| 83 UIWIDGET ui_hscrollbar(UiObject *obj, UiRange *range, ui_callback f, void *userdata) { | |
| 84 return ui_scrollbar(obj, UI_HORIZONTAL, range, f, userdata); | |
| 85 } | |
| 86 | |
| 87 UIWIDGET ui_vscrollbar(UiObject *obj, UiRange *range, ui_callback f, void *userdata) { | |
| 88 return ui_scrollbar(obj, UI_VERTICAL, range, f, userdata); | |
| 89 } | |
| 90 | |
| 91 gboolean ui_scrollbar_value_changed(GtkRange *range, UiEventData *event) { | |
| 92 UiEvent e; | |
| 93 e.obj = event->obj; | |
| 94 e.window = event->obj->window; | |
| 95 e.document = event->obj->ctx->document; | |
| 96 e.eventdata = NULL; | |
| 97 e.intval = event->value; | |
| 98 event->callback(&e, event->userdata); | |
| 99 return TRUE; | |
| 100 } | |
| 101 | |
| 102 double ui_scrollbar_get(UiRange *range) { | |
| 103 double value = gtk_range_get_value(GTK_RANGE(range->obj)); | |
| 104 range->value = value; | |
| 105 return value; | |
| 106 } | |
| 107 | |
| 108 void ui_scrollbar_set(UiRange *range, double value) { | |
| 109 gtk_range_set_value(GTK_RANGE(range->obj), value); | |
| 110 range->value = value; | |
| 111 } | |
| 112 | |
| 113 void ui_scrollbar_setrange(UiRange *range, double min, double max) { | |
| 114 gtk_range_set_range(GTK_RANGE(range->obj), min, max); | |
| 115 range->min = min; | |
| 116 range->max = max; | |
| 117 } | |
| 118 | |
| 119 void ui_scrollbar_setextent(UiRange *range, double extent) { | |
| 120 GtkAdjustment *a = gtk_range_get_adjustment(GTK_RANGE(range->obj)); | |
| 121 #ifdef UI_GTK2LEGACY | |
| 122 a->page_size = extent; | |
| 123 #else | |
| 124 gtk_adjustment_set_page_size(a, extent); | |
| 125 #endif | |
| 126 #if !(GTK_MAJOR_VERSION >= 3 && GTK_MINOR_VERSION >= 18) | |
| 127 gtk_adjustment_changed(a); | |
| 128 #endif | |
| 129 range->extent = extent; | |
| 130 } |
