first version of the generic gui for the tracer
This commit is contained in:
Cedric Roux
@@ -0,0 +1,284 @@
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#include "x.h"
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#include "x_defs.h"
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#include "gui_defs.h"
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#include <X11/Xlib.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int x_connection_fd(x_connection *_x)
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{
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struct x_connection *x = _x;
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return ConnectionNumber(x->d);
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}
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static GC create_gc(Display *d, char *color)
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{
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GC ret = XCreateGC(d, DefaultRootWindow(d), 0, NULL);
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XGCValues gcv;
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XColor rcol, scol;
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XCopyGC(d, DefaultGC(d, DefaultScreen(d)), -1L, ret);
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if (XAllocNamedColor(d, DefaultColormap(d, DefaultScreen(d)),
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color, &scol, &rcol)) {
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gcv.foreground = scol.pixel;
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XChangeGC(d, ret, GCForeground, &gcv);
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} else ERR("X: could not allocate color '%s'\n", color);
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return ret;
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}
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int x_new_color(x_connection *_x, char *color)
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{
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struct x_connection *x = _x;
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x->ncolors++;
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x->colors = realloc(x->colors, x->ncolors * sizeof(GC));
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if (x->colors == NULL) OOM;
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x->colors[x->ncolors-1] = create_gc(x->d, color);
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return x->ncolors - 1;
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}
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x_connection *x_open(void)
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{
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struct x_connection *ret;
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ret = calloc(1, sizeof(struct x_connection));
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if (ret == NULL) OOM;
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ret->d = XOpenDisplay(0);
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printf("XOpenDisplay display %p return x_connection %p\n", ret->d, ret);
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if (ret->d == NULL) ERR("error calling XOpenDisplay: no X? you root?\n");
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x_new_color(ret, "white"); /* background color */
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x_new_color(ret, "black"); /* foreground color */
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return ret;
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}
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x_window *x_create_window(x_connection *_x, int width, int height,
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char *title)
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{
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struct x_connection *x = _x;
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struct x_window *ret;
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ret = calloc(1, sizeof(struct x_window));
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if (ret == NULL) OOM;
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ret->w = XCreateSimpleWindow(x->d, DefaultRootWindow(x->d), 0, 0,
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width, height, 0, WhitePixel(x->d, DefaultScreen(x->d)),
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WhitePixel(x->d, DefaultScreen(x->d)));
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ret->width = width;
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ret->height = height;
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XStoreName(x->d, ret->w, title);
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ret->p = XCreatePixmap(x->d, ret->w, width, height,
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DefaultDepth(x->d, DefaultScreen(x->d)));
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/* enable backing store */
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{
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XSetWindowAttributes att;
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att.backing_store = Always;
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XChangeWindowAttributes(x->d, ret->w, CWBackingStore, &att);
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}
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XSelectInput(x->d, ret->w,
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KeyPressMask |
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ButtonPressMask |
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ButtonReleaseMask |
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PointerMotionMask |
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ExposureMask |
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StructureNotifyMask);
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XMapWindow(x->d, ret->w);
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#if 0
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/* wait for window to be mapped */
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printf("wait for map\n");
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while (1) {
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XEvent ev;
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//XWindowEvent(x->d, ret->w, StructureNotifyMask, &ev);
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XWindowEvent(x->d, ret->w, ExposureMask, &ev);
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printf("got ev %d\n", ev.type);
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//if (ev.type == MapNotify) break;
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if (ev.type == Expose) break;
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}
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printf("XXX create connection %p window %p (win id %d pixmap %d) w h %d %d\n", x, ret, (int)ret->w, (int)ret->p, width, height);
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#endif
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return ret;
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}
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static struct toplevel_window_widget *find_x_window(struct gui *g, Window id)
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{
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struct widget_list *cur;
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struct toplevel_window_widget *w;
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struct x_window *xw;
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cur = g->toplevel;
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while (cur) {
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w = (struct toplevel_window_widget *)cur->item;
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xw = w->x;
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if (xw->w == id) return w;
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cur = cur->next;
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}
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return NULL;
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}
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void x_events(gui *_gui)
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{
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struct gui *g = _gui;
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struct widget_list *cur;
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struct x_connection *x = g->x;
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struct toplevel_window_widget *w;
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printf("x_events START\n");
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/* preprocessing (to "compress" events) */
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cur = g->toplevel;
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while (cur) {
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struct x_window *xw;
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w = (struct toplevel_window_widget *)cur->item;
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xw = w->x;
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xw->redraw = 0;
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xw->repaint = 0;
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xw->resize = 0;
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cur = cur->next;
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}
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while (XPending(x->d)) {
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XEvent ev;
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XNextEvent(x->d, &ev);
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printf("XEV %d\n", ev.type);
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switch (ev.type) {
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case Expose:
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if ((w = find_x_window(g, ev.xexpose.window)) != NULL) {
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struct x_window *xw = w->x;
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xw->redraw = 1;
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}
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break;
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case ConfigureNotify:
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if ((w = find_x_window(g, ev.xexpose.window)) != NULL) {
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struct x_window *xw = w->x;
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xw->resize = 1;
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xw->new_width = ev.xconfigure.width;
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xw->new_height = ev.xconfigure.height;
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if (xw->new_width < 10) xw->new_width = 10;
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if (xw->new_height < 10) xw->new_height = 10;
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printf("ConfigureNotify %d %d\n", ev.xconfigure.width, ev.xconfigure.height);
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}
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break;
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#if 0
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case MapNotify:
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if ((w = find_x_window(g, ev.xexpose.window)) != NULL) {
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struct x_window *xw = w->x;
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xw->repaint = 1;
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}
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break;
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#endif
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default: WARN("TODO: X event type %d\n", ev.type); break;
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}
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}
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/* postprocessing */
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printf("post processing\n");
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cur = g->toplevel;
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while (cur) {
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struct toplevel_window_widget *w =
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(struct toplevel_window_widget *)cur->item;
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struct x_window *xw = w->x;
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if (xw->resize) {
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printf("resize old %d %d new %d %d\n", xw->width, xw->height, xw->new_width, xw->new_height);
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if (xw->width != xw->new_width || xw->height != xw->new_height) {
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w->common.allocate(g, w, 0, 0, xw->new_width, xw->new_height);
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xw->width = xw->new_width;
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xw->height = xw->new_height;
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XFreePixmap(x->d, xw->p);
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xw->p = XCreatePixmap(x->d, xw->w, xw->width, xw->height,
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DefaultDepth(x->d, DefaultScreen(x->d)));
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//xw->repaint = 1;
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}
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}
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if (xw->repaint) {
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w->common.paint(g, w);
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xw->redraw = 1;
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}
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if (xw->redraw) {
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struct x_connection *x = g->x;
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printf("XCopyArea w h %d %d\n", xw->width, xw->height);
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XCopyArea(x->d, xw->p, xw->w, x->colors[1],
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0, 0, xw->width, xw->height, 0, 0);
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}
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cur = cur->next;
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}
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printf("x_events DONE\n");
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}
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void x_flush(x_connection *_x)
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{
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struct x_connection *x = _x;
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XFlush(x->d);
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}
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void x_text_get_dimensions(x_connection *_c, const char *t,
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int *width, int *height, int *baseline)
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{
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struct x_connection *c = _c;
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int dir;
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int ascent;
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int descent;
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XCharStruct overall;
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/* TODO: don't use XQueryTextExtents (X roundtrip) */
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XQueryTextExtents(c->d, XGContextFromGC(c->colors[1]), t, strlen(t),
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&dir, &ascent, &descent, &overall);
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//printf("dir %d ascent %d descent %d lbearing %d rbearing %d width %d ascent %d descent %d\n", dir, ascent, descent, overall.lbearing, overall.rbearing, overall.width, overall.ascent, overall.descent);
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*width = overall.width;
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*height = ascent + descent;
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*baseline = ascent;
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}
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/***********************************************************************/
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/* public drawing functions */
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/***********************************************************************/
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void x_draw_line(x_connection *_c, x_window *_w, int color,
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int x1, int y1, int x2, int y2)
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{
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struct x_connection *c = _c;
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struct x_window *w = _w;
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XDrawLine(c->d, w->p, c->colors[color], x1, y1, x2, y2);
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}
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void x_draw_rectangle(x_connection *_c, x_window *_w, int color,
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int x, int y, int width, int height)
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{
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struct x_connection *c = _c;
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struct x_window *w = _w;
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XDrawRectangle(c->d, w->p, c->colors[color], x, y, width, height);
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}
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void x_fill_rectangle(x_connection *_c, x_window *_w, int color,
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int x, int y, int width, int height)
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{
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struct x_connection *c = _c;
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struct x_window *w = _w;
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XFillRectangle(c->d, w->p, c->colors[color], x, y, width, height);
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}
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void x_draw_string(x_connection *_c, x_window *_w, int color,
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int x, int y, const char *t)
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{
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struct x_connection *c = _c;
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struct x_window *w = _w;
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int tlen = strlen(t);
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XDrawString(c->d, w->p, c->colors[color], x, y, t, tlen);
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}
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void x_draw(x_connection *_c, x_window *_w)
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{
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struct x_connection *c = _c;
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struct x_window *w = _w;
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printf("x_draw XCopyArea w h %d %d display %p window %d pixmap %d\n", w->width, w->height, c->d, (int)w->w, (int)w->p);
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XCopyArea(c->d, w->p, w->w, c->colors[1], 0, 0, w->width, w->height, 0, 0);
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}
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