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tools/ant-gui/: graphical image selector (WIP)

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This commit is contained in:
Werner Almesberger 2012-11-01 18:26:42 -03:00
parent f38d3201d1
commit 64f441ce3a
2 changed files with 243 additions and 0 deletions
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37
tools/ant-gui/Makefile Normal file
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#
# tools/ant-gui/Makefile - Build the Antorcha GUI
#
# Written 2012 by Werner Almesberger
# Copyright 2012 Werner Almesberger
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
MAIN = ant-gui
CFLAGS = -g -Wall -I.. $(shell sdl-config --cflags) \
$(if $(BEN), -static)
LDLIBS = -L../libant -lant $(shell sdl-config --libs) -lSDL_gfx
OBJS = ant-gui.o
.PHONY: all ben clean spotless
all: $(MAIN)
ben:
$(MAKE) BEN=y CC=mipsel-openwrt-linux-gcc
$(MAIN): $(OBJS)
$(CC) $(CFLAGS) -o $@ $(OBJS) $(LDLIBS)
clean:
rm -f $(OBJS)
spotless: clean
rm -f $(MAIN)

206
tools/ant-gui/ant-gui.c Normal file
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/*
* tools/ant-gui/ant-gui.c - Antorcha GUI
*
* Written 2012 by Werner Almesberger
* Copyright 2012 Werner Almesberger
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <stdint.h>
#include <stdlib.h>
#include <stdio.h>
#include "SDL.h"
#include "SDL_gfxPrimitives.h"
#include <libant/libant.h>
#define XRES 320 /* canvas width */
#define YRES 240 /* canvas height */
#define W 80 /* image width */
#define H 16 /* image height */
#define NX (XRES/W)
#define NY (YRES/H)
#define FG_SEL_RGBA 0x000000ff
#define BG_SEL_RGBA 0xffffffff
#define FG_NORM_RGBA 0xffffffff
#define BG_NORM_RGBA 0x000000ff
#define FG_ACT_RGBA 0xff2020ff
struct img {
uint8_t *canvas;
const char *path;
};
static void render(SDL_Surface *s, struct img *img, int x, int y,
int sel, int act)
{
int ix, iy;
uint32_t fg = act ? FG_ACT_RGBA : sel ? FG_SEL_RGBA : FG_NORM_RGBA;
uint32_t bg = sel ? BG_SEL_RGBA : BG_NORM_RGBA;
for (iy = 0; iy != H; iy++)
for (ix = 0; ix != W; ix++)
if (img->canvas[(iy*W+ix) >> 3] & (1 << (ix & 7)))
pixelColor(s, x+ix, y+iy, fg);
else
pixelColor(s, x+ix, y+iy, bg);
}
static void gui(struct img *img, int n)
{
SDL_Surface *surf;
SDL_Event event;
int x = 0, y = 0, y_top = 0;
int dx, dy, upload;
int ix, iy, i;
int active = -1;
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
fprintf(stderr, "SDL_init: %s\n", SDL_GetError());
exit(1);
}
atexit(SDL_Quit);
surf = SDL_SetVideoMode(XRES, YRES, 0, SDL_SWSURFACE);
if (!surf) {
fprintf(stderr, "SDL_SetVideoMode: %s\n", SDL_GetError());
exit(1);
}
while (1) {
dx = dy = upload = 0;
SDL_WaitEvent(&event);
switch (event.type) {
case SDL_KEYDOWN:
switch (event.key.keysym.sym) {
case SDLK_UP:
if (y > 0)
dy = -1;
break;
case SDLK_DOWN:
if ((y+1)*NX+x < n)
dy = 1;
break;
case SDLK_RIGHT:
dx = 1;
break;
case SDLK_LEFT:
dx = -1;
break;
case SDLK_RETURN:
upload = 1;
break;
case SDLK_q:
return;
default:
break;
}
break;
case SDL_QUIT:
return;
default:
break;
}
x = (x+NX+dx) % NX;
y += dy;
if (y*NX+x >= n)
x = n-y*NX-1;
if (y < y_top)
y_top = y;
if (y >= y_top+NY)
y_top = y-NY+1;
if (upload) {
i = y*NX+x;
active = i;
}
SDL_LockSurface(surf);
SDL_FillRect(surf, NULL, SDL_MapRGB(surf->format, 0, 0, 0));
for (iy = 0; iy != NY; iy++)
for (ix = 0; ix != NX; ix++) {
i = iy*NX+ix;
if (i >= n)
break;
render(surf, img+i, ix*W, (iy-y_top)*H,
ix == x && iy == y, i == active);
}
SDL_UnlockSurface(surf);
SDL_UpdateRect(surf, 0, 0, 0, 0);
}
}
static void *generate(const char *path)
{
FILE *file;
char buf[100];
struct edit *edits = NULL, **last = &edits;
const char *err;
char *nl;
void *res;
file = fopen(path, "r");
if (!file) {
perror(path);
exit(1);
}
while (fgets(buf, sizeof(buf), file)) {
nl = strchr(buf, '\n');
if (nl)
*nl = 0;
if (edits) {
*last = malloc(sizeof(struct edit));
if (!*last)
abort();
(*last)->type = edit_nl;
last = &(*last)->next;
}
*last = text2edit(buf, &err);
if (!*last) {
fprintf(stderr, "\"%s\": %s\n", buf, err);
exit(1);
}
while (*last)
last = &(*last)->next;
}
fclose(file);
res = apply_edits(W, H, edits, &err);
if (!res) {
fprintf(stderr, "%s\n", err);
exit(1);
}
free_edit(edits);
return res;
}
int main(int argc, char **argv)
{
int n = argc-1;
struct img img[n];
int i;
for (i = 0; i != n; i++) {
img[i].canvas = generate(argv[i+1]);
img[i].path = argv[i+1];
}
gui(img, n);
exit(1);
}