graphics

commit 86dd7a1b921101d4344c450d83e37969b8191b11
parent c1b14a92e65828d44aa996027a4153101aa01e84
Author: Brian Swetland <swetland@frotz.net>
Date:   Tue, 17 Sep 2013 21:44:28 -0700

wip menu experiments

Diffstat:
A
test/menu.cc
 | 
153
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 153 insertions(+), 0 deletions(-)
diff --git a/test/menu.cc b/test/menu.cc
@@ -0,0 +1,153 @@
+/* Copyright 2013 Brian Swetland <swetland@frotz.net>
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "app.h"
+#include "matrix.h"
+#include "shared.h"
+
+#include "texturefont.h"
+#include "textgrid.h"
+#include "Renderable.h"
+
+struct MenuItem {
+	MenuItem *next;
+	const char *text;
+	void *cookie;
+	unsigned x, y;
+	unsigned width;
+	unsigned t, b, l, r;
+};
+
+class BigMenu {
+public:
+	void addItem(const char *text, void *cookie);
+	void layout(unsigned width, unsigned height);
+	void update(unsigned x, unsigned y);
+	void render(void) { text->render(); }
+	static BigMenu *create(TextureFont *font);
+private:
+	DISALLOW_COPY_AND_ASSIGN(BigMenu);
+	BigMenu(TextureFont *_font);
+	TextureFont *font;
+	Text *text;
+	MenuItem *first, *last;
+	unsigned count;
+};
+
+BigMenu* BigMenu::create(TextureFont *font) {
+	return new BigMenu(font);
+}
+
+BigMenu::BigMenu(TextureFont *_font)
+	: font(_font), first(nullptr), last(nullptr), count(0) {
+	text = Text::create(_font);
+}
+
+void BigMenu::addItem(const char *text, void *cookie) {
+	MenuItem *itm = new MenuItem;
+	itm->next = nullptr;
+	itm->text = text;
+	itm->cookie = cookie;
+	itm->width = 0;
+	itm->x = 0;
+	itm->y = 0;
+	if (last)
+		last->next = itm;
+	else
+		first = itm;
+	last = itm;
+	count++;
+}
+
+void BigMenu::layout(unsigned width, unsigned height) {
+	unsigned y, skip;
+	skip = (font->getMaxHeight() * 5) / 3;
+	y = (height / 2) - ((skip * count) / 2) + font->getMaxAscent();
+	for (MenuItem *itm = first; itm; itm = itm->next) {
+		unsigned iw, ih;
+		font->measure(itm->text, &iw, &ih);
+		itm->y = y;
+		itm->x = (width / 2) - (iw / 2);
+		printf("iw %d\n", iw);
+		itm->width = iw;
+		text->puts(itm->x, itm->y, itm->text);
+		y += skip;
+
+		itm->t = itm->y - font->getMaxAscent();
+		itm->b = itm->t + font->getMaxHeight();
+		itm->l = itm->x;
+		itm->r = itm->x + itm->width;
+	}
+}
+
+void BigMenu::update(unsigned x, unsigned y) {
+	text->clear();
+	for (MenuItem *itm = first; itm; itm = itm->next) {
+		if ((x > itm->l) && (x < itm->r) && (y > itm->t) && (y < itm->b))
+			text->setColor(RGBA(0,255,0,255));
+		else
+			text->setColor(RGBA(255,255,255,255));
+		text->puts(itm->x, itm->y, itm->text);
+	}
+}
+
+class TestApp : public App {
+public:
+	TestApp();
+	int init(void);
+	void render(void);
+
+private:
+	UniformBuffer obj, mat, scn;
+	mat4 proj;
+
+	TextureFont *font;
+	BigMenu *menu;
+};
+
+TestApp::TestApp() : App() { }
+
+int TestApp::init(void) {
+	if (!(font = TextureFont::load("orbitron-bold-72")))
+		return error("cannot load font");
+	menu = BigMenu::create(font);
+	menu->addItem("Start", nullptr);
+	menu->addItem("Options", nullptr);
+	menu->addItem("Quit", nullptr);
+	menu->layout(width, height);
+	return 0;
+}
+
+void TestApp::render(void) {
+	struct ubScene scene;
+	struct ubObject object;
+	struct ubMaterial material;
+	mat4 model, view, tmp;
+
+	scene.Ortho.setOrtho(0, width, height, 0, -1.0, 1.0);
+	scene.OrthoSize.set(width, height, 0, 0);
+	scene.TextGrid.set(16, 16, 64, 64);
+	scn.load(&scene, sizeof(scene));
+	scn.use(U_SCENE);
+
+	int mx, my;
+	SDL_GetMouseState(&mx,&my);
+	menu->update(mx, my);
+	menu->render();
+}
+
+App *createApp(void) {
+	return new TestApp();
+}