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restructured demo

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This commit is contained in:
vurtun 2015-09-23 11:16:03 +02:00
parent 273fb3f293
commit 273e337895
19 changed files with 3177 additions and 3091 deletions
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9
demo/make.sh Executable file
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#!/bin/sh
set -e
cd opengl
make -f Makefile
cd ../x11/
make -f Makefile
cd ../nanovg/
make -f Makefile
cd ..

342
demo/nanovg.c
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/*
Copyright (c) 2015 Micha Mettke
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdarg.h>
#include <string.h>
#include <assert.h>
#ifdef _WIN32
#include <windows.h>
#endif
#include <GL/glew.h>
#include <GL/gl.h>
#include <GL/glu.h>
#include <SDL2/SDL.h>
#define NANOVG_GLES2_IMPLEMENTATION
#include "nanovg/nanovg.h"
#include "nanovg/nanovg_gl.h"
#include "nanovg/nanovg_gl_utils.h"
#include "nanovg/nanovg.c"
/* macros */
#define DTIME 33
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#define MAX(a,b) ((a) < (b) ? (b) : (a))
#define CLAMP(i,v,x) (MAX(MIN(v,x), i))
#define LEN(a) (sizeof(a)/sizeof(a)[0])
#define UNUSED(a) ((void)(a))
#include "../zahnrad.h"
static void
clipboard_set(const char *text)
{SDL_SetClipboardText(text);}
static zr_bool
clipboard_is_filled(void)
{return SDL_HasClipboardText();}
static const char*
clipboard_get(void)
{return SDL_GetClipboardText();}
#include "demo.c"
static void
die(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fputs("\n", stderr);
exit(EXIT_FAILURE);
}
static zr_size
font_get_width(zr_handle handle, const zr_char *text, zr_size len)
{
zr_size width;
float bounds[4];
NVGcontext *ctx = (NVGcontext*)handle.ptr;
nvgTextBounds(ctx, 0, 0, text, &text[len], bounds);
width = (zr_size)(bounds[2] - bounds[0]);
return width;
}
static void
draw(NVGcontext *nvg, struct zr_command_queue *queue, int width, int height)
{
const struct zr_command *cmd;
glPushAttrib(GL_ENABLE_BIT|GL_COLOR_BUFFER_BIT);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_CULL_FACE);
glDisable(GL_DEPTH_TEST);
glEnable(GL_SCISSOR_TEST);
glEnable(GL_TEXTURE_2D);
nvgBeginFrame(nvg, width, height, ((float)width/(float)height));
zr_foreach_command(cmd, queue) {
switch (cmd->type) {
case ZR_COMMAND_NOP: break;
case ZR_COMMAND_SCISSOR: {
const struct zr_command_scissor *s = zr_command(scissor, cmd);
nvgScissor(nvg, s->x, s->y, s->w, s->h);
} break;
case ZR_COMMAND_LINE: {
const struct zr_command_line *l = zr_command(line, cmd);
nvgBeginPath(nvg);
nvgMoveTo(nvg, l->begin.x, l->begin.y);
nvgLineTo(nvg, l->end.x, l->end.y);
nvgFillColor(nvg, nvgRGBA(l->color.r, l->color.g, l->color.b, l->color.a));
nvgFill(nvg);
} break;
case ZR_COMMAND_CURVE: {
const struct zr_command_curve *q = zr_command(curve, cmd);
nvgBeginPath(nvg);
nvgMoveTo(nvg, q->begin.x, q->begin.y);
nvgBezierTo(nvg, q->ctrl[0].x, q->ctrl[0].y, q->ctrl[1].x, q->ctrl[1].y, q->end.x, q->end.y);
nvgStrokeColor(nvg, nvgRGBA(q->color.r, q->color.g, q->color.b, q->color.a));
nvgStroke(nvg);
} break;
case ZR_COMMAND_RECT: {
const struct zr_command_rect *r = zr_command(rect, cmd);
nvgBeginPath(nvg);
nvgRoundedRect(nvg, r->x, r->y, r->w, r->h, r->rounding);
nvgFillColor(nvg, nvgRGBA(r->color.r, r->color.g, r->color.b, r->color.a));
nvgFill(nvg);
} break;
case ZR_COMMAND_CIRCLE: {
const struct zr_command_circle *c = zr_command(circle, cmd);
nvgBeginPath(nvg);
nvgCircle(nvg, c->x + (c->w/2.0f), c->y + c->w/2.0f, c->w/2.0f);
nvgFillColor(nvg, nvgRGBA(c->color.r, c->color.g, c->color.b, c->color.a));
nvgFill(nvg);
} break;
case ZR_COMMAND_TRIANGLE: {
const struct zr_command_triangle *t = zr_command(triangle, cmd);
nvgBeginPath(nvg);
nvgMoveTo(nvg, t->a.x, t->a.y);
nvgLineTo(nvg, t->b.x, t->b.y);
nvgLineTo(nvg, t->c.x, t->c.y);
nvgLineTo(nvg, t->a.x, t->a.y);
nvgFillColor(nvg, nvgRGBA(t->color.r, t->color.g, t->color.b, t->color.a));
nvgFill(nvg);
} break;
case ZR_COMMAND_TEXT: {
const struct zr_command_text *t = zr_command(text, cmd);
nvgBeginPath(nvg);
nvgRoundedRect(nvg, t->x, t->y, t->w, t->h, 0);
nvgFillColor(nvg, nvgRGBA(t->background.r, t->background.g,
t->background.b, t->background.a));
nvgFill(nvg);
nvgBeginPath(nvg);
nvgFillColor(nvg, nvgRGBA(t->foreground.r, t->foreground.g,
t->foreground.b, t->foreground.a));
nvgTextAlign(nvg, NVG_ALIGN_MIDDLE);
nvgText(nvg, t->x, t->y + t->h * 0.5f, t->string, &t->string[t->length]);
nvgFill(nvg);
} break;
case ZR_COMMAND_IMAGE: {
const struct zr_command_image *i = zr_command(image, cmd);
NVGpaint imgpaint;
imgpaint = nvgImagePattern(nvg, i->x, i->y, i->w, i->h, 0, i->img.handle.id, 1.0f);
nvgBeginPath(nvg);
nvgRoundedRect(nvg, i->x, i->y, i->w, i->h, 0);
nvgFillPaint(nvg, imgpaint);
nvgFill(nvg);
} break;
case ZR_COMMAND_MAX:
default: break;
}
}
zr_command_queue_clear(queue);
nvgResetScissor(nvg);
nvgEndFrame(nvg);
glPopAttrib();
}
static void
key(struct zr_input *in, SDL_Event *evt, zr_bool down)
{
const Uint8* state = SDL_GetKeyboardState(NULL);
SDL_Keycode sym = evt->key.keysym.sym;
if (sym == SDLK_RSHIFT || sym == SDLK_LSHIFT)
zr_input_key(in, ZR_KEY_SHIFT, down);
else if (sym == SDLK_DELETE)
zr_input_key(in, ZR_KEY_DEL, down);
else if (sym == SDLK_RETURN)
zr_input_key(in, ZR_KEY_ENTER, down);
else if (sym == SDLK_SPACE)
zr_input_key(in, ZR_KEY_SPACE, down);
else if (sym == SDLK_BACKSPACE)
zr_input_key(in, ZR_KEY_BACKSPACE, down);
else if (sym == SDLK_LEFT)
zr_input_key(in, ZR_KEY_LEFT, down);
else if (sym == SDLK_RIGHT)
zr_input_key(in, ZR_KEY_RIGHT, down);
else if (sym == SDLK_c)
zr_input_key(in, ZR_KEY_COPY, down && state[SDL_SCANCODE_LCTRL]);
else if (sym == SDLK_v)
zr_input_key(in, ZR_KEY_PASTE, down && state[SDL_SCANCODE_LCTRL]);
else if (sym == SDLK_x)
zr_input_key(in, ZR_KEY_CUT, down && state[SDL_SCANCODE_LCTRL]);
}
static void
motion(struct zr_input *in, SDL_Event *evt)
{
const zr_int x = evt->motion.x;
const zr_int y = evt->motion.y;
zr_input_motion(in, x, y);
}
static void
btn(struct zr_input *in, SDL_Event *evt, zr_bool down)
{
const zr_int x = evt->button.x;
const zr_int y = evt->button.y;
if (evt->button.button == SDL_BUTTON_LEFT)
zr_input_button(in, ZR_BUTTON_LEFT, x, y, down);
else if (evt->button.button == SDL_BUTTON_LEFT)
zr_input_button(in, ZR_BUTTON_RIGHT, x, y, down);
}
static void
text(struct zr_input *in, SDL_Event *evt)
{
zr_glyph glyph;
memcpy(glyph, evt->text.text, ZR_UTF_SIZE);
zr_input_glyph(in, glyph);
}
static void
resize(SDL_Event *evt)
{
if (evt->window.event != SDL_WINDOWEVENT_RESIZED) return;
glViewport(0, 0, evt->window.data1, evt->window.data2);
}
int
main(int argc, char *argv[])
{
/* Platform */
int width, height;
const char *font_path;
zr_size font_height;
SDL_Window *win;
SDL_GLContext glContext;
NVGcontext *vg = NULL;
unsigned int started;
unsigned int dt;
/* GUI */
struct demo_gui gui;
if (argc < 2) {
fprintf(stdout,"Missing TTF Font file argument: gui <path>\n");
exit(EXIT_FAILURE);
}
font_path = argv[1];
font_height = 10;
/* SDL */
SDL_Init(SDL_INIT_VIDEO|SDL_INIT_TIMER|SDL_INIT_EVENTS);
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
win = SDL_CreateWindow("Demo",
SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED,
WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_SHOWN);
glContext = SDL_GL_CreateContext(win);
SDL_GetWindowSize(win, &width, &height);
/* OpenGL */
glewExperimental = 1;
if (glewInit() != GLEW_OK)
die("[GLEW] failed setup\n");
glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
/* nanovg */
vg = nvgCreateGLES2(NVG_ANTIALIAS|NVG_DEBUG);
if (!vg) die("[NVG]: failed to init\n");
nvgCreateFont(vg, "fixed", font_path);
nvgFontFace(vg, "fixed");
nvgFontSize(vg, font_height);
nvgTextAlign(vg, NVG_ALIGN_LEFT|NVG_ALIGN_MIDDLE);
/* GUI */
memset(&gui, 0, sizeof gui);
zr_command_queue_init_fixed(&gui.queue, calloc(MAX_MEMORY, 1), MAX_MEMORY);
gui.font.userdata = zr_handle_ptr(vg);
gui.font.width = font_get_width;
nvgTextMetrics(vg, NULL, NULL, &gui.font.height);
init_demo(&gui);
while (gui.running) {
/* Input */
SDL_Event evt;
started = SDL_GetTicks();
zr_input_begin(&gui.input);
while (SDL_PollEvent(&evt)) {
if (evt.type == SDL_WINDOWEVENT) resize(&evt);
else if (evt.type == SDL_QUIT) goto cleanup;
else if (evt.type == SDL_KEYUP) key(&gui.input, &evt, zr_false);
else if (evt.type == SDL_KEYDOWN) key(&gui.input, &evt, zr_true);
else if (evt.type == SDL_MOUSEBUTTONDOWN) btn(&gui.input, &evt, zr_true);
else if (evt.type == SDL_MOUSEBUTTONUP) btn(&gui.input, &evt, zr_false);
else if (evt.type == SDL_MOUSEMOTION) motion(&gui.input, &evt);
else if (evt.type == SDL_TEXTINPUT) text(&gui.input, &evt);
else if (evt.type == SDL_MOUSEWHEEL)
zr_input_scroll(&gui.input,(float)evt.wheel.y);
}
zr_input_end(&gui.input);
/* GUI */
SDL_GetWindowSize(win, &width, &height);
run_demo(&gui);
/* Draw */
glClearColor(0.4f, 0.4f, 0.4f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
draw(vg, &gui.queue, width, height);
SDL_GL_SwapWindow(win);
/* Timing */
dt = SDL_GetTicks() - started;
if (dt < DTIME)
SDL_Delay(DTIME - dt);
}
cleanup:
/* Cleanup */
free(zr_buffer_memory(&gui.queue.buffer));
nvgDeleteGLES2(vg);
SDL_GL_DeleteContext(glContext);
SDL_DestroyWindow(win);
SDL_Quit();
return 0;
}

25
demo/nanovg/Makefile Normal file
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# Install
BIN = zahnrad
# Compiler
CC = clang
DCC = gcc
CFLAGS = -std=c99
SRC = nanovg.c ../../zahnrad.c
OBJ = $(SRC:.c=.o)
# Modes
.PHONY: clang
clang: CC = clang
clang: $(BIN)
.PHONY: gcc
gcc: CC = gcc
gcc: $(BIN)
$(BIN):
@mkdir -p bin
rm -f bin/$(BIN) $(OBJS)
$(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) -lSDL2 -lGL -lm -lGLU -lGLEW

0
demo/nanovg/LICENSE.txt → demo/nanovg/dep/LICENSE.txt
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0
demo/nanovg/README.md → demo/nanovg/dep/README.md
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0
demo/nanovg/fontstash.h → demo/nanovg/dep/fontstash.h
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2752
demo/nanovg/dep/nanovg.c Normal file
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0
demo/nanovg/nanovg.h → demo/nanovg/dep/nanovg.h
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0
demo/nanovg/nanovg_gl.h → demo/nanovg/dep/nanovg_gl.h
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0
demo/nanovg/nanovg_gl_utils.h → demo/nanovg/dep/nanovg_gl_utils.h
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0
demo/nanovg/stb_image.h → demo/nanovg/dep/stb_image.h
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0
demo/nanovg/stb_truetype.h → demo/nanovg/dep/stb_truetype.h
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3080
demo/nanovg/nanovg.c
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26
demo/opengl/Makefile Normal file
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# Install
BIN = zahnrad
# Compiler
CC = clang
DCC = gcc
# Flags
CFLAGS = -std=c89 -pedantic
SRC = ../../zahnrad.c opengl.c
OBJ = $(SRC:.c=.o)
# Modes
.PHONY: clang
clang: CC = clang
clang: $(BIN)
.PHONY: gcc
gcc: CC = gcc
gcc: $(BIN)
$(BIN):
@mkdir -p bin
rm -f bin/$(BIN) $(OBJS)
$(CC) $(SRC) $(CFLAGS) -o bin/$(BIN) -lSDL2 -lGL -lm -lGLU -lGLEW

BIN
demo/opengl/bin/zahnrad Executable file
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4
demo/opengl.c → demo/opengl/opengl.c
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@ -41,13 +41,13 @@
#define LEN(a) (sizeof(a)/sizeof(a)[0])
#define UNUSED(a) ((void)(a))
#include "../zahnrad.h"
#include "../../zahnrad.h"
static void clipboard_set(const char *text){SDL_SetClipboardText(text);}
static zr_bool clipboard_is_filled(void) {return SDL_HasClipboardText();}
static const char* clipboard_get(void){return SDL_GetClipboardText();}
#include "demo.c"
#include "../demo.c"
/* ==============================================================
*

26
demo/x11/Makefile Normal file
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# Install
BIN = zahnrad
# Compiler
CC = clang
DCC = gcc
# Flags
CFLAGS = -std=c89 -pedantic
SRC = xlib.c ../../zahnrad.c
OBJ = $(SRC:.c=.o)
# Modes
.PHONY: gcc
gcc: CC = gcc
gcc: $(BIN)
.PHONY: clang
clang: CC = clang
clang: $(BIN)
$(BIN):
@mkdir -p bin
rm -f bin/$(BIN) $(OBJS)
$(CC) $(SRC) $(CFLAGS) -D_POSIX_C_SOURCE=200809L -o bin/$(BIN) -lX11 -lm

BIN
demo/x11/bin/zahnrad Executable file
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4
demo/xlib.c → demo/x11/xlib.c
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@ -36,13 +36,13 @@
#define LEN(a) (sizeof(a)/sizeof(a)[0])
#define UNUSED(a) ((void)(a))
#include "../zahnrad.h"
#include "../../zahnrad.h"
static void clipboard_set(const char *text){UNUSED(text);}
static zr_bool clipboard_is_filled(void){return zr_false;}
static const char* clipboard_get(void) {return NULL;}
#include "demo.c"
#include "../demo.c"
typedef struct XFont XFont;
typedef struct XSurface XSurface;