435 lines
13 KiB
C
435 lines
13 KiB
C
#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 <X11/Xutil.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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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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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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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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x->xft_colors = realloc(x->xft_colors, x->ncolors * sizeof(XftColor));
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if (x->xft_colors == NULL) OOM;
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if (XftColorAllocName(x->d, DefaultVisual(x->d, DefaultScreen(x->d)),
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DefaultColormap(x->d, DefaultScreen(x->d)),
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color, &x->xft_colors[x->ncolors-1]) == False)
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ERR("could not allocate color '%s'\n", color);
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return x->ncolors - 1;
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}
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int x_new_font(x_connection *_x, char *font) {
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struct x_connection *x = _x;
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/* TODO: allocate fonts only once */
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x->nfonts++;
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x->fonts = realloc(x->fonts, x->nfonts * sizeof(XftFont *));
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if (x->fonts == NULL) OOM;
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x->fonts[x->nfonts-1] = XftFontOpenName(x->d, DefaultScreen(x->d), font);
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if (x->fonts[x->nfonts-1] == NULL)
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ERR("failed allocating font '%s'\n", font);
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return x->nfonts - 1;
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}
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x_connection *x_open(void) {
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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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LOGD("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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x_new_font(ret, "sans-8");
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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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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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XFillRectangle(x->d, ret->p, x->colors[BACKGROUND_COLOR],
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0, 0, width, height);
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ret->xft = XftDrawCreate(x->d, ret->p,
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DefaultVisual(x->d, DefaultScreen(x->d)),
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DefaultColormap(x->d, DefaultScreen(x->d)));
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if (ret->xft == NULL) ERR("XftDrawCreate failed\n");
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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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return ret;
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}
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x_image *x_create_image(x_connection *_x, unsigned char *data,
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int width, int height) {
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struct x_connection *x = _x;
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struct x_image *ret;
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XImage *ximage;
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XVisualInfo *vs;
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XVisualInfo template;
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int nvs;
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Visual *v;
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ret = calloc(1, sizeof(struct x_image));
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if (ret == NULL) OOM;
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template.class = TrueColor;
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template.depth = 24;
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template.red_mask = 0xff0000;
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template.green_mask = 0x00ff00;
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template.blue_mask = 0x0000ff;
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template.bits_per_rgb = 8;
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vs = XGetVisualInfo(x->d, VisualDepthMask | VisualClassMask |
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VisualRedMaskMask | VisualGreenMaskMask | VisualBlueMaskMask |
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VisualBitsPerRGBMask, &template, &nvs);
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if (vs == NULL) {
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/* try again with 32 bpp */
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template.depth = 32;
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vs = XGetVisualInfo(x->d, VisualDepthMask | VisualClassMask |
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VisualRedMaskMask | VisualGreenMaskMask | VisualBlueMaskMask |
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VisualBitsPerRGBMask, &template, &nvs);
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}
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if (vs == NULL) ERR("no good visual found\n");
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v = vs[0].visual;
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XFree(vs);
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ximage = XCreateImage(x->d, v, 24, ZPixmap, 0,
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(char *)data, width, height, 32, 0);
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if (ximage == NULL) ERR("image creation failed\n");
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ret->p = XCreatePixmap(x->d, DefaultRootWindow(x->d), width, height, 24);
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XPutImage(x->d, ret->p, DefaultGC(x->d, DefaultScreen(x->d)),
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ximage, 0, 0, 0, 0, width, height);
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/* TODO: be sure it's fine to set data to NULL */
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ximage->data = NULL;
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XDestroyImage(ximage);
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ret->width = width;
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ret->height = height;
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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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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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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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LOGD("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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LOGD("XEV %d\n", ev.type);
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switch (ev.type) {
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case MapNotify:
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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.xconfigure.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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LOGD("ConfigureNotify %d %d\n", ev.xconfigure.width, ev.xconfigure.height);
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}
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break;
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case ButtonPress:
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if ((w = find_x_window(g, ev.xbutton.window)) != NULL) {
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int key_modifiers = 0;
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if (ev.xbutton.state & ShiftMask) key_modifiers |= KEY_SHIFT;
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if (ev.xbutton.state & Mod1Mask) key_modifiers |= KEY_ALT;
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if (ev.xbutton.state & ControlMask) key_modifiers |= KEY_CONTROL;
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w->common.button(g, w, ev.xbutton.x, ev.xbutton.y, key_modifiers,
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ev.xbutton.button, 0);
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}
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break;
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case ButtonRelease:
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if ((w = find_x_window(g, ev.xbutton.window)) != NULL) {
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int key_modifiers = 0;
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if (ev.xbutton.state & ShiftMask) key_modifiers |= KEY_SHIFT;
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if (ev.xbutton.state & Mod1Mask) key_modifiers |= KEY_ALT;
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if (ev.xbutton.state & ControlMask) key_modifiers |= KEY_CONTROL;
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w->common.button(g, w, ev.xbutton.x, ev.xbutton.y, key_modifiers,
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ev.xbutton.button, 1);
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}
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break;
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default:
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if (gui_logd) WARN("TODO: X event type %d\n", ev.type);
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break;
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}
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}
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/* postprocessing */
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LOGD("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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LOGD("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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XftDrawDestroy(xw->xft);
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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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XFillRectangle(x->d, xw->p, x->colors[BACKGROUND_COLOR],
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0, 0, xw->width, xw->height);
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xw->xft = XftDrawCreate(x->d, xw->p,
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DefaultVisual(x->d, DefaultScreen(x->d)),
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DefaultColormap(x->d, DefaultScreen(x->d)));
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if (xw->xft == NULL) ERR("XftDrawCreate failed\n");
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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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LOGD("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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LOGD("x_events DONE\n");
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}
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void x_flush(x_connection *_x) {
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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, int font, const char *t,
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int *width, int *height, int *baseline) {
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struct x_connection *c = _c;
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XGlyphInfo ext;
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XftTextExtentsUtf8(c->d, c->fonts[font], (FcChar8 *)t, strlen(t), &ext);
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*width = ext.width;
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*height = c->fonts[font]->height;
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*baseline = c->fonts[font]->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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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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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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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 font, int color,
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int x, int y, const char *t) {
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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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XftDrawStringUtf8(w->xft, &c->xft_colors[color], c->fonts[font],
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x, y, (const unsigned char *)t, tlen);
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}
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void x_draw_clipped_string(x_connection *_c, x_window *_w, int font,
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int color, int x, int y, const char *t,
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int clipx, int clipy, int clipwidth, int clipheight) {
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struct x_window *w = _w;
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XRectangle clip = { clipx, clipy, clipwidth, clipheight };
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if (XftDrawSetClipRectangles(w->xft, 0, 0, &clip, 1) == False) abort();
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x_draw_string(_c, _w, font, color, x, y, t);
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if (XftDrawSetClip(w->xft, NULL) == False) abort();
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}
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void x_draw_image(x_connection *_c, x_window *_w, x_image *_img, int x, int y) {
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struct x_connection *c = _c;
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struct x_window *w = _w;
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struct x_image *img = _img;
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XCopyArea(c->d, img->p, w->p, DefaultGC(c->d, DefaultScreen(c->d)),
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0, 0, img->width, img->height, x, y);
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}
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void x_draw(x_connection *_c, x_window *_w) {
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struct x_connection *c = _c;
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struct x_window *w = _w;
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LOGD("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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/* those two special functions are to plot many points
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* first call x_add_point many times then x_plot_points once
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*/
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void x_add_point(x_connection *_c, int x, int y) {
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struct x_connection *c = _c;
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if (c->pts_size == c->pts_maxsize) {
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c->pts_maxsize += 65536;
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c->pts = realloc(c->pts, c->pts_maxsize * sizeof(XPoint));
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if (c->pts == NULL) OOM;
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}
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c->pts[c->pts_size].x = x;
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c->pts[c->pts_size].y = y;
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c->pts_size++;
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}
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void x_plot_points(x_connection *_c, x_window *_w, int color) {
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struct x_connection *c = _c;
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LOGD("x_plot_points %d points\n", c->pts_size);
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struct x_window *w = _w;
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XDrawPoints(c->d, w->p, c->colors[color], c->pts, c->pts_size,
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CoordModeOrigin);
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c->pts_size = 0;
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}
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