comparison: ui/gtk/graphics.c
ui/gtk/graphics.c
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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 "graphics.h" | |
| 33 #include "container.h" | |
| 34 #include "../common/object.h" | |
| 35 | |
| 36 UIWIDGET ui_drawingarea(UiObject *obj, ui_drawfunc f, void *userdata) { | |
| 37 GtkWidget *widget = gtk_drawing_area_new(); | |
| 38 | |
| 39 if(f) { | |
| 40 UiDrawEvent *event = malloc(sizeof(UiDrawEvent)); | |
| 41 event->obj = obj; | |
| 42 event->callback = f; | |
| 43 event->userdata = userdata; | |
| 44 ui_connect_draw_handler(widget, event); | |
| 45 } | |
| 46 | |
| 47 UiContainer *ct = uic_get_current_container(obj); | |
| 48 ct->add(ct, widget, TRUE); | |
| 49 | |
| 50 return widget; | |
| 51 } | |
| 52 | |
| 53 | |
| 54 static gboolean widget_button_pressed( | |
| 55 GtkWidget *widget, | |
| 56 GdkEvent *event, | |
| 57 gpointer userdata) | |
| 58 { | |
| 59 UiEventData *eventdata = userdata; | |
| 60 | |
| 61 UiMouseEvent me; | |
| 62 me.x = (int)event->button.x; | |
| 63 me.y = (int)event->button.y; | |
| 64 | |
| 65 int exec = 0; | |
| 66 if(event->button.type == GDK_BUTTON_PRESS) { | |
| 67 exec = 1; | |
| 68 me.type = UI_PRESS; | |
| 69 } else if(event->button.type == GDK_2BUTTON_PRESS) { | |
| 70 exec = 1; | |
| 71 me.type = UI_PRESS2; | |
| 72 } | |
| 73 | |
| 74 if(exec) { | |
| 75 UiEvent e; | |
| 76 e.obj = eventdata->obj; | |
| 77 e.window = eventdata->obj->window; | |
| 78 e.document = eventdata->obj->ctx->document; | |
| 79 e.eventdata = &me; | |
| 80 e.intval = 0; | |
| 81 eventdata->callback(&e, eventdata->userdata); | |
| 82 } | |
| 83 return TRUE; | |
| 84 } | |
| 85 | |
| 86 void ui_drawingarea_getsize(UIWIDGET drawingarea, int *width, int *height) { | |
| 87 #ifdef UI_GTK3 | |
| 88 *width = gtk_widget_get_allocated_width(drawingarea); | |
| 89 *height = gtk_widget_get_allocated_height(drawingarea); | |
| 90 #else | |
| 91 *width = drawingarea->allocation.width; | |
| 92 *height = drawingarea->allocation.height; | |
| 93 #endif | |
| 94 } | |
| 95 | |
| 96 void ui_drawingarea_redraw(UIWIDGET drawingarea) { | |
| 97 gtk_widget_queue_draw(drawingarea); | |
| 98 } | |
| 99 | |
| 100 void ui_drawingarea_mousehandler(UiObject *obj, UIWIDGET widget, ui_callback f, void *u) { | |
| 101 gtk_widget_set_events(widget, GDK_BUTTON_PRESS_MASK); | |
| 102 if(f) { | |
| 103 UiEventData *event = malloc(sizeof(UiEventData)); | |
| 104 event->obj = obj; | |
| 105 event->callback = f; | |
| 106 event->userdata = u; | |
| 107 | |
| 108 g_signal_connect(G_OBJECT(widget), | |
| 109 "button-press-event", | |
| 110 G_CALLBACK(widget_button_pressed), | |
| 111 event); | |
| 112 } else { | |
| 113 // TODO: warning | |
| 114 } | |
| 115 } | |
| 116 | |
| 117 | |
| 118 // text layout | |
| 119 UiTextLayout* ui_text(UiGraphics *g) { | |
| 120 UiTextLayout *layout = malloc(sizeof(UiTextLayout)); | |
| 121 PangoContext *pc = ui_get_pango_context(g); | |
| 122 layout->layout = pango_layout_new(pc); | |
| 123 return layout; | |
| 124 } | |
| 125 | |
| 126 void ui_text_setstring(UiTextLayout *layout, char *str) { | |
| 127 pango_layout_set_text(layout->layout, str, -1); | |
| 128 } | |
| 129 | |
| 130 void ui_text_setstringl(UiTextLayout *layout, char *str, int len) { | |
| 131 pango_layout_set_text(layout->layout, str, len); | |
| 132 } | |
| 133 | |
| 134 void ui_text_setfont(UiTextLayout *layout, char *font, int size) { | |
| 135 PangoFontDescription *fontDesc; | |
| 136 fontDesc = pango_font_description_from_string(font); | |
| 137 pango_font_description_set_size(fontDesc, size * PANGO_SCALE); | |
| 138 pango_layout_set_font_description(layout->layout, fontDesc); | |
| 139 pango_font_description_free(fontDesc); | |
| 140 } | |
| 141 | |
| 142 void ui_text_getsize(UiTextLayout *layout, int *width, int *height) { | |
| 143 pango_layout_get_size(layout->layout, width, height); | |
| 144 *width = *width / PANGO_SCALE; | |
| 145 *height = *height / PANGO_SCALE; | |
| 146 } | |
| 147 | |
| 148 void ui_text_setwidth(UiTextLayout *layout, int width) { | |
| 149 pango_layout_set_width(layout->layout, width * PANGO_SCALE); | |
| 150 pango_layout_set_ellipsize(layout->layout, PANGO_ELLIPSIZE_END); | |
| 151 //pango_layout_set_wrap(layout->layout, PANGO_WRAP_WORD_CHAR); | |
| 152 } | |
| 153 | |
| 154 void ui_text_free(UiTextLayout *text) { | |
| 155 g_object_unref(text->layout); | |
| 156 free(text); | |
| 157 } |
