Makefile- button.c
- button.h
- container.c
- container.h
- display.c
- display.h
- dnd.c
- dnd.h
- draw_cairo.c
- draw_cairo.h
- draw_gdk.c
- draw_gdk.h
- entry.c
- entry.h
- graphics.c
- graphics.h
- headerbar.c
- headerbar.h
- icon.c
- icon.h
- image.c
- image.h
- list.c
- list.h
- menu.c
- menu.h
- objs.mk
- range.c
- range.h
- text.c
- text.h
- toolbar.c
- toolbar.h
- toolkit.c
- toolkit.h
- window.c
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 "container.h"
33
34 #include "draw_cairo.h"
35
36
37 #if GTK_MAJOR_VERSION >= 3
38 static void ui_drawingarea_draw(
39 GtkDrawingArea *area,
40 cairo_t *cr,
41 int width,
42 int height,
43 gpointer data)
44 {
45 UiCairoGraphics g;
46 g.g.width = width;
47 g.g.height = height;
48 g.widget = GTK_WIDGET(area);
49 g.cr = cr;
50
51 UiDrawEvent *event = data;
52 UiEvent ev;
53 ev.obj = event->obj;
54 ev.window = event->obj->window;
55 ev.document = event->obj->ctx->document;
56
57 event->callback(&ev, &g.g, event->userdata);
58 }
59 #endif
60
61 #if UI_GTK3
62 gboolean ui_drawingarea_expose(GtkWidget *w, cairo_t *cr, void *data) {
63 int width = gtk_widget_get_allocated_width(w);
64 int height = gtk_widget_get_allocated_height(w);
65 ui_drawingarea_draw(GTK_DRAWING_AREA(w), cr, width, height, data);
66 return FALSE;
67 }
68 #endif
69 #ifdef UI_GTK2
70 gboolean ui_canvas_expose(GtkWidget *w, GdkEventExpose *e, void *data) {
71 UiCairoGraphics g;
72 g.g.width = w->allocation.width;
73 g.g.height = w->allocation.height;
74 g.widget = w;
75 g.cr = gdk_cairo_create(w->window);
76
77 UiDrawEvent *event = data;
78 UiEvent ev;
79 ev.obj = event->obj;
80 ev.window = event->obj->window;
81 ev.document = event->obj->ctx->document;
82
83 event->callback(&ev, &g.g, event->userdata);
84
85 return FALSE;
86 }
87 #endif
88
89 // function from graphics.h
90
91 void ui_connect_draw_handler(GtkWidget *widget, UiDrawEvent *event) {
92 #if GTK_MAJOR_VERSION >= 4
93 gtk_drawing_area_set_draw_func(GTK_DRAWING_AREA(widget), ui_drawingarea_draw, event, NULL);
94 #elif GTK_MAJOR_VERSION == 3
95 g_signal_connect(G_OBJECT(widget),
96 "draw",
97 G_CALLBACK(ui_drawingarea_expose),
98 event);
99 #else
100 g_signal_connect(G_OBJECT(widget),
101 "expose_event",
102 G_CALLBACK(ui_canvas_expose),
103 event);
104 #endif
105 }
106
107
108 PangoContext *ui_get_pango_context(UiGraphics *g) {
109 UiCairoGraphics *gr = (UiCairoGraphics*)g;
110 //return gtk_widget_get_pango_context(gr->widget);
111 return pango_cairo_create_context(gr->cr);
112 }
113
114
115 // drawing functions
116 void ui_graphics_color(UiGraphics *g, int red, int green, int blue) {
117 UiCairoGraphics *gr = (UiCairoGraphics*)g;
118 double dred = (double)red / (double)255;
119 double dgreen = (double)green / (double)255;
120 double dblue = (double)blue / (double)255;
121 cairo_set_source_rgb(gr->cr, dred, dgreen, dblue);
122 }
123
124
125 void ui_draw_line(UiGraphics *g, int x1, int y1, int x2, int y2) {
126 UiCairoGraphics *gr = (UiCairoGraphics*)g;
127 cairo_set_line_width(gr->cr, 1);
128 cairo_move_to(gr->cr, (double)x1 + 0.5, (double)y1 + 0.5);
129 cairo_line_to(gr->cr, (double)x2 + 0.5, (double)y2 + 0.5);
130 cairo_stroke(gr->cr);
131 }
132
133 void ui_draw_rect(UiGraphics *g, int x, int y, int w, int h, int fill) {
134 UiCairoGraphics *gr = (UiCairoGraphics*)g;
135 cairo_set_line_width(gr->cr, 1);
136 cairo_rectangle(gr->cr, x + 0.5, y + 0.5 , w, h);
137 if(fill) {
138 cairo_fill(gr->cr);
139 } else {
140 cairo_stroke(gr->cr);
141 }
142 }
143
144 void ui_draw_text(UiGraphics *g, int x, int y, UiTextLayout *text) {
145 UiCairoGraphics *gr = (UiCairoGraphics*)g;
146 cairo_move_to(gr->cr, x, y);
147 pango_cairo_show_layout(gr->cr, text->layout);
148 }
149
150