diff examples/example-label.c @ 145:7f1af54bb35a

core: rework label alignment, closes #2494 @1h Now labels can be positioned on a bounding box with much more convenient possibilities.
author David Demelier <markand@malikania.fr>
date Wed, 14 Oct 2020 18:11:38 +0200
parents
children c577c15df07f
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/examples/example-label.c	Wed Oct 14 18:11:38 2020 +0200
@@ -0,0 +1,168 @@
+/*
+ * example-label.c -- show how to use label and alignments
+ *
+ * Copyright (c) 2020 David Demelier <markand@malikania.fr>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#include <core/clock.h>
+#include <core/event.h>
+#include <core/label.h>
+#include <core/painter.h>
+#include <core/panic.h>
+#include <core/sys.h>
+#include <core/theme.h>
+#include <core/util.h>
+#include <core/window.h>
+
+#define W       (1280)
+#define H       (720)
+
+static void
+init(void)
+{
+	if (!sys_init() ||
+	    !window_init("Example - Label", W, H) ||
+	    !theme_init())
+		panic();
+}
+
+static void
+quit(void)
+{
+	theme_finish();
+	window_finish();
+	sys_finish();
+}
+
+static void
+run(void)
+{
+	struct clock clock = {0};
+	struct label labels[] = {
+		{
+			.x = 0,
+			.y = 0,
+			.w = W,
+			.h = H,
+			.text = "Top left",
+			.align = LABEL_ALIGN_TOP_LEFT
+		},
+		{
+			.x = 0,
+			.y = 0,
+			.w = W,
+			.h = H,
+			.text = "Top",
+			.align = LABEL_ALIGN_TOP
+		},
+		{
+			.x = 0,
+			.y = 0,
+			.w = W,
+			.h = H,
+			.text = "Top right",
+			.align = LABEL_ALIGN_TOP_RIGHT
+		},
+		{
+			.x = 0,
+			.y = 0,
+			.w = W,
+			.h = H,
+			.text = "Right",
+			.align = LABEL_ALIGN_RIGHT
+		},
+		{
+			.x = 0,
+			.y = 0,
+			.w = W,
+			.h = H,
+			.text = "Bottom right",
+			.align = LABEL_ALIGN_BOTTOM_RIGHT
+		},
+		{
+			.x = 0,
+			.y = 0,
+			.w = W,
+			.h = H,
+			.text = "Bottom",
+			.align = LABEL_ALIGN_BOTTOM
+		},
+		{
+			.x = 0,
+			.y = 0,
+			.w = W,
+			.h = H,
+			.text = "Bottom left",
+			.align = LABEL_ALIGN_BOTTOM_LEFT
+		},
+		{
+			.x = 0,
+			.y = 0,
+			.w = W,
+			.h = H,
+			.text = "Left",
+			.align = LABEL_ALIGN_LEFT
+		},
+		{
+			.x = 0,
+			.y = 0,
+			.w = W,
+			.h = H,
+			.text = "The world is Malikania.",
+			.flags = LABEL_FLAGS_SHADOW
+		},
+	};
+
+	clock_start(&clock);
+
+	for (;;) {
+		union event ev;
+		unsigned int elapsed = clock_elapsed(&clock);
+
+		clock_start(&clock);
+
+		while (event_poll(&ev)) {
+			switch (ev.type) {
+			case EVENT_QUIT:
+				return;
+			default:
+				break;
+			}
+		}
+
+		painter_set_color(0x4f8fbaff);
+		painter_clear();
+
+		for (size_t i = 0; i < NELEM(labels); ++i)
+			label_draw(&labels[i]);
+
+		painter_present();
+
+		if ((elapsed = clock_elapsed(&clock)) < 20)
+			delay(20 - elapsed);
+	}
+}
+
+int
+main(int argc, char **argv)
+{
+	(void)argc;
+	(void)argv;
+
+	init();
+	run();
+	quit();
+}
+