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4 changed files with 205 additions and 11 deletions
117
mimview/image.c
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117
mimview/image.c
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@ -0,0 +1,117 @@
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#include "mimview.h"
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#include <stb_image.h>
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#include <stb_ds.h>
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image_t* images = NULL;
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static int oldw = 0, oldh = 0;
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static unsigned char* buffer = NULL;
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void image_init(void) {
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unsigned char* d = ((MwLLCommonPixmap)pxdata)->raw;
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int w = ((MwLLCommonPixmap)pxdata)->width;
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int h = ((MwLLCommonPixmap)pxdata)->height;
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if(oldw != w || oldh != h) {
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int y, x;
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if(buffer != NULL) free(buffer);
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for(y = 0; y < h; y++) {
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for(x = 0; x < w; x++) {
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unsigned char* px = &d[(y * w + x) * 4];
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if(((y / 16) + (x / 16)) % 2) {
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px[0] = px[1] = px[2] = 128;
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} else {
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px[0] = px[1] = px[2] = 64;
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}
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px[3] = 255;
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}
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}
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buffer = malloc(w * h * 4);
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memcpy(buffer, d, w * h * 4);
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} else {
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memcpy(d, buffer, w * h * 4);
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}
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oldw = w;
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oldh = h;
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MwLLPixmapUpdate(pxdata);
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MwForceRender(image);
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}
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void image_add(const char* path) {
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image_t img;
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img.path = MDEStringDuplicate(path);
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img.data = NULL;
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img.width = 0;
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img.height = 0;
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img.x = 0;
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img.y = 0;
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img.scale = 0;
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arrput(images, img);
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}
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void image_render(void) {
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if(current < arrlen(images) && images[current].data == NULL) {
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int w, h, ch;
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unsigned char* d;
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again:;
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d = stbi_load(images[current].path, &w, &h, &ch, 4);
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if(d != NULL) {
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int pw = ((MwLLCommonPixmap)pxdata)->width;
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int ph = ((MwLLCommonPixmap)pxdata)->height;
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double sw = (double)w / pw;
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double sh = (double)h / ph;
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images[current].data = d;
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images[current].width = w;
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images[current].height = h;
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images[current].scale = sw > sh ? sw : sh;
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} else {
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free(images[current].path);
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arrdel(images, current);
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if(arrlen(images) <= current) {
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current = 0;
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}
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goto again;
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}
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}
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if(current < arrlen(images)) {
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unsigned char* d = ((MwLLCommonPixmap)pxdata)->raw;
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int y;
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int x;
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int w = ((MwLLCommonPixmap)pxdata)->width;
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int h = ((MwLLCommonPixmap)pxdata)->height;
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int ox = (w - images[current].width / images[current].scale) / 2 - images[current].x / images[current].scale;
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int oy = (h - images[current].height / images[current].scale) / 2 - images[current].y / images[current].scale;
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char str[128];
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sprintf(str, "mimview [%d of %d] %s", current + 1, arrlen(images), images[current].path);
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MwVaApply(window,
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MwNtitle, str,
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NULL);
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for(y = (oy < 0 ? 0 : 0); y < h + (oy < 0 ? -oy : 0); y++) {
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for(x = (ox < 0 ? 0 : 0); x < w + (ox < 0 ? -ox : 0); x++) {
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if(0 <= (y + oy) && (y + oy) < h && 0 <= (x + ox) && (x + ox) < w) {
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int ix = x * images[current].scale;
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int iy = y * images[current].scale;
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unsigned char* opx;
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unsigned char* ipx;
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if(0 <= iy && iy < images[current].height && 0 <= ix && ix < images[current].width) {
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int i;
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opx = &d[((y + oy) * w + x + ox) * 4];
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ipx = &images[current].data[(iy * images[current].width + ix) * 4];
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for(i = 0; i < 3; i++) {
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opx[i] *= (255 - ipx[3]) / 255.0;
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opx[i] += ipx[i] * (ipx[3] / 255.0);
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}
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}
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}
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}
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}
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MwLLPixmapUpdate(pxdata);
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MwForceRender(image);
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}
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}
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@ -1,12 +1,15 @@
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#include "mimview.h"
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#include <stb_ds.h>
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#define ButtonWidth 32
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#define ButtonHeight 24
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MwWidget window, menu, image;
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MwWidget bprev, bnext, bzoomin, bzoomout;
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MwLLPixmap pxprojector, pxdata = NULL;
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static MwLLPixmap pxprev, pxnext, pxzoomin, pxzoomout;
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static MwWidget bprev, bnext, sep, bzoomin, bzoomout;
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static MwWidget sep;
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static void resize(MwWidget handle, void* user, void* client) {
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int y = MwGetInteger(menu, MwNheight);
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@ -18,17 +21,18 @@ static void resize(MwWidget handle, void* user, void* client) {
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if(pxdata != NULL) MwLLDestroyPixmap(pxdata);
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iw = ww - 10;
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ih = wh - 5 - ButtonHeight - 5;
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ih = wh - 5 - 5 - ButtonHeight - 5;
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data = malloc(iw * ih * 4);
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memset(data, 0, iw * ih * 4);
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pxdata = MwLoadRaw(window, data, iw, ih);
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free(data);
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image_init();
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MwVaApply(image,
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MwNpixmap, pxdata,
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MwNx, 5,
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MwNy, y + 5,
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MwNwidth, ww - 10,
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MwNheight, wh - 5 - ButtonHeight - 5,
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MwNheight, wh - 5 - 5 - ButtonHeight - 5,
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NULL);
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bx = (ww - 10 - (ButtonWidth * 2 + 5) * 2) / 2;
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@ -62,13 +66,18 @@ static void resize(MwWidget handle, void* user, void* client) {
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MwNwidth, ButtonWidth,
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MwNheight, ButtonHeight,
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NULL);
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if(current < arrlen(images)) {
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image_render();
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}
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}
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int main(int argc, char** argv) {
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int pad;
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int i;
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MwLibraryInit();
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window = MwVaCreateWidget(MwWindowClass, "main", NULL, MwDEFAULT, MwDEFAULT, 320, 240,
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window = MwVaCreateWidget(MwWindowClass, "main", NULL, MwDEFAULT, MwDEFAULT, 320, 320,
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MwNtitle, "mimview",
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NULL);
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menu = MwCreateWidget(MwMenuClass, "menu", window, 0, 0, 0, 0);
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@ -100,20 +109,26 @@ int main(int argc, char** argv) {
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NULL);
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MwVaApply(bzoomin,
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MwNpixmap, pxzoomout,
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MwNpixmap, pxzoomin,
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MwNpadding, pad,
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NULL);
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MwVaApply(bzoomout,
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MwNpixmap, pxzoomin,
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MwNpixmap, pxzoomout,
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MwNpadding, pad,
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NULL);
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MwAddUserHandler(window, MwNresizeHandler, resize, NULL);
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ui_init();
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resize(window, NULL, NULL);
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for(i = 1; i < argc; i++) {
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image_add(argv[i]);
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}
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image_render();
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ui_init();
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MwLoop(window);
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}
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#include <stdlib.h>
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#include <string.h>
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typedef struct image {
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char* path;
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unsigned char* data;
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int width;
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int height;
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int x;
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int y;
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double scale;
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} image_t;
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/* main.c */
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extern MwWidget window, menu;
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extern MwLLPixmap pxprojector;
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extern MwWidget window, menu, image;
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extern MwLLPixmap pxprojector, pxdata;
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extern MwWidget bprev, bnext, bzoomin, bzoomout;
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/* ui.c */
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void ui_init(void);
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extern int current;
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void ui_init(void);
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/* image.c */
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extern image_t* images;
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void image_init(void);
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void image_add(const char* path);
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void image_render(void);
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#endif
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44
mimview/ui.c
44
mimview/ui.c
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#include "mimview.h"
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#include <stb_ds.h>
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static void* help_about;
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int current = 0;
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static void menu_menu(MwWidget handle, void* user, void* client) {
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if(client == help_about) {
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}
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}
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static void bprev_activate(MwWidget handle, void* user, void* client) {
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current--;
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if(current == -1) current = arrlen(images) - 1;
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if(current == -1) current = 0;
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if(current < arrlen(images)) {
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image_init();
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image_render();
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}
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}
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static void bnext_activate(MwWidget handle, void* user, void* client) {
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current++;
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if(current == arrlen(images)) current = 0;
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if(current < arrlen(images)) {
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image_init();
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image_render();
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}
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}
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static void bzoomin_activate(MwWidget handle, void* user, void* client) {
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if(current < arrlen(images)) {
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if(images[current].scale >= 0.2) {
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images[current].scale /= 2;
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}
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image_init();
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image_render();
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}
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}
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static void bzoomout_activate(MwWidget handle, void* user, void* client) {
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if(current < arrlen(images)) {
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images[current].scale *= 2;
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image_init();
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image_render();
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}
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}
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void ui_init(void) {
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void* m;
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help_about = MwMenuAdd(menu, m, "About");
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MwAddUserHandler(menu, MwNmenuHandler, menu_menu, NULL);
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MwAddUserHandler(bprev, MwNactivateHandler, bprev_activate, NULL);
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MwAddUserHandler(bnext, MwNactivateHandler, bnext_activate, NULL);
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MwAddUserHandler(bzoomin, MwNactivateHandler, bzoomin_activate, NULL);
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MwAddUserHandler(bzoomout, MwNactivateHandler, bzoomout_activate, NULL);
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}
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