commit - e8edc17986bd6a3062f75dba8543dfa7eb4451b7
commit + fd4655403059a7b5c042e3ba206b9f3f94b9f831
blob - /dev/null
blob + d623f4e8c0b5b577b4b0d23b07c7e4d480ef2185 (mode 644)
--- /dev/null
+++ src/cmd/draw/colors.c
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+#include <event.h>
+
+int nbit, npix;
+Image *pixel;
+Rectangle crect[256];
+
+Image *color[256];
+
+void
+eresized(int new)
+{
+ int x, y, i, n, nx, ny;
+ Rectangle r, b;
+
+ if(new && getwindow(display, Refnone) < 0){
+ fprint(2, "colors: can't reattach to window: %r\n");
+ exits("resized");
+ }
+ if(screen->depth > 8){
+ n = 256;
+ nx = 16;
+ }else{
+ n = 1<<screen->depth;
+ nx = 1<<(screen->depth/2);
+ }
+
+ ny = n/nx;
+ draw(screen, screen->r, display->white, nil, ZP);
+ r = insetrect(screen->r, 5);
+ r.min.y+=20;
+ b.max.y=r.min.y;
+ for(i=n-1, y=0; y!=ny; y++){
+ b.min.y=b.max.y;
+ b.max.y=r.min.y+(r.max.y-r.min.y)*(y+1)/ny;
+ b.max.x=r.min.x;
+ for(x=0; x!=nx; x++, --i){
+ b.min.x=b.max.x;
+ b.max.x=r.min.x+(r.max.x-r.min.x)*(x+1)/nx;
+ crect[i]=insetrect(b, 1);
+ draw(screen, crect[i], color[i], nil, ZP);
+ }
+ }
+ flushimage(display, 1);
+}
+
+char *buttons[] =
+{
+ "exit",
+ 0
+};
+
+ulong
+grey(int i)
+{
+ if(i < 0)
+ return grey(0);
+ if(i > 255)
+ return grey(255);
+ return (i<<16)+(i<<8)+i;
+}
+
+Menu menu =
+{
+ buttons
+};
+
+int
+dither[16] = {
+ 0, 8, 2, 10,
+ 12, 4, 14, 6,
+ 3, 11, 1, 9,
+ 15, 7, 13, 5
+};
+
+void
+main(int argc, char *argv[])
+{
+ Point p;
+ Mouse m;
+ int i, j, k, l, n, ramp, prev;
+ char buf[100];
+ char *fmt;
+ Image *dark;
+ ulong rgb;
+
+ ramp = 0;
+
+ fmt = "index %3d r %3lud g %3lud b %3lud 0x%.8luX ";
+ ARGBEGIN{
+ default:
+ goto Usage;
+ case 'x':
+ fmt = "index %2luX r %3luX g %3luX b %3luX 0x%.8luX ";
+ break;
+ case 'r':
+ ramp = 1;
+ break;
+ }ARGEND
+
+ if(argc){
+ Usage:
+ fprint(2, "Usage: %s [-rx]\n", argv0);
+ exits("usage");
+ }
+
+ if(initdraw(nil, nil, "colors") < 0)
+ sysfatal("initdraw failed: %r");
+ einit(Emouse);
+
+ for(i=0; i<256; i++){
+ if(ramp){
+ if(screen->chan == CMAP8){
+ /* dither the fine grey */
+ j = i-(i%17);
+ dark = allocimage(display, Rect(0,0,1,1), screen->chan, 1, (grey(j)<<8)+0xFF);
+ color[i] = allocimage(display, Rect(0,0,4,4), screen->chan, 1, (grey(j+17)<<8)+0xFF);
+ for(j=0; j<16; j++){
+ k = j%4;
+ l = j/4;
+ if(dither[j] > (i%17))
+ draw(color[i], Rect(k, l, k+1, l+1), dark, nil, ZP);
+ }
+ freeimage(dark);
+ }else
+ color[i] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, (grey(i)<<8)+0xFF);
+ }else
+ color[i] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, (cmap2rgb(i)<<8)+0xFF);
+ if(color[i] == nil)
+ sysfatal("can't allocate image: %r");
+ }
+ eresized(0);
+ prev = -1;
+ for(;;){
+ m = emouse();
+ switch(m.buttons){
+ case 1:
+ while(m.buttons){
+ if(screen->depth > 8)
+ n = 256;
+ else
+ n = 1<<screen->depth;
+ for(i=0; i!=n; i++)
+ if(i!=prev && ptinrect(m.xy, crect[i])){
+ if(ramp)
+ rgb = grey(i);
+ else
+ rgb = cmap2rgb(i);
+ sprint(buf, fmt,
+ i,
+ (rgb>>16)&0xFF,
+ (rgb>>8)&0xFF,
+ rgb&0xFF,
+ (rgb<<8) | 0xFF);
+ p = addpt(screen->r.min, Pt(2,2));
+ draw(screen, Rpt(p, addpt(p, stringsize(font, buf))), display->white, nil, p);
+ string(screen, p, display->black, ZP, font, buf);
+ prev=i;
+ break;
+ }
+ m = emouse();
+ }
+ break;
+
+ case 4:
+ switch(emenuhit(3, &m, &menu)){
+ case 0:
+ exits(0);
+ }
+ }
+ }
+}
blob - /dev/null
blob + 60f49e68a15f1cc3f6ad62e6281014e384dc9c41 (mode 644)
--- /dev/null
+++ src/cmd/draw/tcolors.c
+#include <u.h>
+#include <libc.h>
+#include <draw.h>
+#include <thread.h>
+#include <keyboard.h>
+#include <mouse.h>
+
+enum
+{
+ STACK = 8192,
+};
+
+int nbit, npix;
+Image *pixel;
+Rectangle crect[256];
+Image *color[256];
+char *fmt;
+int ramp;
+
+Mousectl *mousectl;
+Keyboardctl *keyboardctl;
+
+void keyboardthread(void*);
+void mousethread(void*);
+void resizethread(void*);
+
+ulong
+grey(int i)
+{
+ if(i < 0)
+ return grey(0);
+ if(i > 255)
+ return grey(255);
+ return (i<<16)+(i<<8)+i;
+}
+
+int
+dither[16] = {
+ 0, 8, 2, 10,
+ 12, 4, 14, 6,
+ 3, 11, 1, 9,
+ 15, 7, 13, 5
+};
+
+void
+threadmain(int argc, char *argv[])
+{
+ int i, j, k, l;
+ Image *dark;
+
+ ramp = 0;
+
+ fmt = "index %3d r %3lud g %3lud b %3lud 0x%.8luX ";
+ ARGBEGIN{
+ default:
+ goto Usage;
+ case 'x':
+ fmt = "index %2luX r %3luX g %3luX b %3luX 0x%.8luX ";
+ break;
+ case 'r':
+ ramp = 1;
+ break;
+ }ARGEND
+
+ if(argc){
+ Usage:
+ fprint(2, "Usage: %s [-rx]\n", argv0);
+ exits("usage");
+ }
+
+ if(initdraw(nil, nil, "colors") < 0)
+ sysfatal("initdraw failed: %r");
+
+ mousectl = initmouse(nil, display->image);
+ if(mousectl == nil)
+ sysfatal("initmouse: %r");
+
+ keyboardctl = initkeyboard(nil);
+ if(keyboardctl == nil)
+ sysfatal("initkeyboard: %r");
+
+ for(i=0; i<256; i++){
+ if(ramp){
+ if(screen->chan == CMAP8){
+ /* dither the fine grey */
+ j = i-(i%17);
+ dark = allocimage(display, Rect(0,0,1,1), screen->chan, 1, (grey(j)<<8)+0xFF);
+ color[i] = allocimage(display, Rect(0,0,4,4), screen->chan, 1, (grey(j+17)<<8)+0xFF);
+ for(j=0; j<16; j++){
+ k = j%4;
+ l = j/4;
+ if(dither[j] > (i%17))
+ draw(color[i], Rect(k, l, k+1, l+1), dark, nil, ZP);
+ }
+ freeimage(dark);
+ }else
+ color[i] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, (grey(i)<<8)+0xFF);
+ }else
+ color[i] = allocimage(display, Rect(0,0,1,1), screen->chan, 1, (cmap2rgb(i)<<8)+0xFF);
+ if(color[i] == nil)
+ sysfatal("can't allocate image: %r");
+ }
+
+ threadcreate(mousethread, nil, STACK);
+ threadcreate(keyboardthread, nil, STACK);
+ threadcreate(resizethread, nil, STACK);
+}
+
+void
+keyboardthread(void *v)
+{
+ Rune r;
+
+ USED(v);
+
+ while(recv(keyboardctl->c, &r) >= 0)
+ ;
+}
+
+char *buttons[] =
+{
+ "exit",
+ 0
+};
+
+Menu menu =
+{
+ buttons
+};
+
+void
+mousethread(void *v)
+{
+ Point p;
+ Mouse m;
+ int i, n, prev;
+ char buf[100];
+ ulong rgb;
+
+ prev = -1;
+ while(readmouse(mousectl) >= 0){
+ m = mousectl->m;
+ switch(m.buttons){
+ case 1:
+ while(m.buttons){
+ if(screen->depth > 8)
+ n = 256;
+ else
+ n = 1<<screen->depth;
+ for(i=0; i!=n; i++)
+ if(i!=prev && ptinrect(m.xy, crect[i])){
+ if(ramp)
+ rgb = grey(i);
+ else
+ rgb = cmap2rgb(i);
+ sprint(buf, fmt,
+ i,
+ (rgb>>16)&0xFF,
+ (rgb>>8)&0xFF,
+ rgb&0xFF,
+ (rgb<<8) | 0xFF);
+ p = addpt(screen->r.min, Pt(2,2));
+ draw(screen, Rpt(p, addpt(p, stringsize(font, buf))), display->white, nil, p);
+ string(screen, p, display->black, ZP, font, buf);
+ prev=i;
+ break;
+ }
+ readmouse(mousectl);
+ m = mousectl->m;
+ }
+ break;
+
+ case 4:
+ switch(menuhit(3, mousectl, &menu, nil)){
+ case 0:
+ exits(0);
+ }
+ }
+ }
+}
+
+void
+eresized(int new)
+{
+ int x, y, i, n, nx, ny;
+ Rectangle r, b;
+
+ if(new && getwindow(display, Refnone) < 0){
+ fprint(2, "colors: can't reattach to window: %r\n");
+ exits("resized");
+ }
+ if(screen->depth > 8){
+ n = 256;
+ nx = 16;
+ }else{
+ n = 1<<screen->depth;
+ nx = 1<<(screen->depth/2);
+ }
+
+ ny = n/nx;
+ draw(screen, screen->r, display->white, nil, ZP);
+ r = insetrect(screen->r, 5);
+ r.min.y+=20;
+ b.max.y=r.min.y;
+ for(i=n-1, y=0; y!=ny; y++){
+ b.min.y=b.max.y;
+ b.max.y=r.min.y+(r.max.y-r.min.y)*(y+1)/ny;
+ b.max.x=r.min.x;
+ for(x=0; x!=nx; x++, --i){
+ b.min.x=b.max.x;
+ b.max.x=r.min.x+(r.max.x-r.min.x)*(x+1)/nx;
+ crect[i]=insetrect(b, 1);
+ draw(screen, crect[i], color[i], nil, ZP);
+ }
+ }
+ flushimage(display, 1);
+}
+
+void
+resizethread(void *v)
+{
+ ulong x;
+
+ USED(v);
+
+ eresized(0);
+ while(recv(mousectl->resizec, &x) >= 0)
+ eresized(1);
+}
+
