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implement basic features with pango/cairo

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This commit is contained in:
Sascha Kruse 2013-02-22 13:28:12 +00:00
parent 64a7dd9743
commit b2883b2133
3 changed files with 148 additions and 453 deletions
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11
.clang_complete
View File

@ -1,7 +1,10 @@
-pthread
-DVERSION="foo"
-I/usr/include/dbus-1.0
-I/usr/lib/dbus-1.0/include
-I/usr/include/freetype2
-I/usr/include/glib-2.0
-I/usr/lib/glib-2.0/include
-DVERSION="foo"
-I/usr/include/libpng15
-I/usr/include/pango-1.0
-I/usr/include/pixman-1
-I/usr/lib/dbus-1.0/include
-I/usr/lib/glib-2.0/include
-pthread

2
config.mk
View File

@ -25,7 +25,7 @@ ifeq (${PKG_CONFIG}, ${EMPTY})
$(error "Failed to find pkg-config, please make sure it is installed)
endif
pkg_config_packs:="dbus-1 libxdg-basedir x11 freetype2 xext xft xscrnsaver glib-2.0 gio-2.0"
pkg_config_packs:="dbus-1 libxdg-basedir x11 freetype2 xext xft xscrnsaver glib-2.0 gio-2.0 pango cairo pangocairo"
# includes and libs
INCS := $(shell ${PKG_CONFIG} --cflags ${pkg_config_packs})

588
x.c
View File

@ -42,6 +42,8 @@ DEALINGS IN THE SOFTWARE.
#include <X11/Xlib.h>
#include <X11/X.h>
#include <X11/Xatom.h>
#include <pango/pangocairo.h>
#include <cairo-xlib.h>
#include "x.h"
#include "utils.h"
@ -49,65 +51,159 @@ DEALINGS IN THE SOFTWARE.
#include "settings.h"
#include "notification.h"
#define WIDTH 400
#define HEIGHT 400
xctx_t xctx;
bool dunst_grab_errored = false;
typedef struct _cairo_ctx {
cairo_status_t status;
cairo_surface_t *surface;
PangoFontDescription *desc;
} cairo_ctx_t;
cairo_ctx_t cairo_ctx;
static void x_shortcut_setup_error_handler(void);
static int x_shortcut_tear_down_error_handler(void);
static void x_win_move(int width, int height);
void
drawrect(DC * dc, int x, int y, unsigned int w, unsigned int h, bool fill,
unsigned long color)
void x_cairo_setup(void)
{
XSetForeground(dc->dpy, dc->gc, color);
if (fill)
XFillRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x,
dc->y + y, w, h);
else
XDrawRectangle(dc->dpy, dc->canvas, dc->gc, dc->x + x,
dc->y + y, w - 1, h - 1);
cairo_ctx.surface = cairo_xlib_surface_create(xctx.dc->dpy,
xctx.win, DefaultVisual(xctx.dc->dpy, 0), WIDTH, HEIGHT);
cairo_ctx.desc = pango_font_description_from_string(settings.font);
}
void drawtext(DC * dc, const char *text, ColorSet * col)
void r_setup_pango_layout(PangoLayout *layout, int width)
{
char buf[BUFSIZ];
size_t mn, n = strlen(text);
/* shorten text if necessary */
for (mn = MIN(n, sizeof buf);
textnw(dc, text, mn) + dc->font.height / 2 > dc->w; mn--)
if (mn == 0)
return;
memcpy(buf, text, mn);
if (mn < n)
for (n = MAX(mn - 3, 0); n < mn; buf[n++] = '.') ;
drawrect(dc, 0, 0, dc->w, dc->h, true, col->BG);
drawtextn(dc, buf, mn, col);
pango_layout_set_wrap(layout, PANGO_WRAP_WORD_CHAR);
pango_layout_set_width(layout, width * PANGO_SCALE);
pango_layout_set_font_description(layout, cairo_ctx.desc);
}
void drawtextn(DC * dc, const char *text, size_t n, ColorSet * col)
PangoLayout *r_create_layout_from_notification(cairo_t *c, notification *n)
{
int x = dc->x + dc->font.height / 2;
int y = dc->y + dc->font.ascent + 1;
PangoLayout *layout = pango_cairo_create_layout(c);
XSetForeground(dc->dpy, dc->gc, col->FG);
if (dc->font.xft_font) {
if (!dc->xftdraw)
eprintf("error, xft drawable does not exist");
XftDrawStringUtf8(dc->xftdraw, &col->FG_xft,
dc->font.xft_font, x, y,
(unsigned char *)text, n);
} else if (dc->font.set) {
printf("XmbDrawString\n");
XmbDrawString(dc->dpy, dc->canvas, dc->font.set, dc->gc, x, y,
text, n);
notification_update_text_to_render(n);
int width = -1;
if (xctx.geometry.w > 0)
width = xctx.geometry.w;
r_setup_pango_layout(layout, width);
pango_layout_set_text(layout, n->text_to_render, -1);
return layout;
}
GSList *r_create_layouts(cairo_t *c)
{
GSList *layouts = NULL;
for (GList *iter = g_queue_peek_head_link(displayed);
iter; iter = iter->next)
{
notification *n = iter->data;
layouts = g_slist_append(layouts,
r_create_layout_from_notification(c, n));
}
return layouts;
}
void r_free_layouts(GSList *layouts)
{
g_slist_free_full(layouts, g_object_unref);
}
void x_win_draw(void)
{
printf("drawing\n");
cairo_t *c;
c = cairo_create(cairo_ctx.surface);
GSList *layouts = r_create_layouts(c);
int height = 0;
int width = xctx.geometry.w;
for (GSList *iter = layouts; iter; iter = iter->next) {
PangoLayout *l = iter->data;
int w,h;
pango_layout_get_pixel_size(l, &w, &h);
height += h;
width = MAX(w, width);
}
printf("(%d,%d)\n", width, height);
XResizeWindow(xctx.dc->dpy, xctx.win, width, height);
cairo_rectangle(c, 0.0, 0.0, width, height);
cairo_set_source_rgb(c, 0.2, 0.2, 0.2);
cairo_fill(c);
cairo_set_source_rgb(c, 0.8, 0.8, 0.8);
cairo_move_to(c, 0, 0);
double y = 0;
for (GSList *iter = layouts; iter; iter = iter->next) {
PangoLayout *l = iter->data;
cairo_move_to(c, 0, y);
pango_cairo_update_layout(c, l);
pango_cairo_show_layout(c, l);
int h;
pango_layout_get_pixel_size(l, NULL, &h);
y += h;
}
cairo_show_page(c);
x_win_move(width, height);
cairo_destroy(c);
r_free_layouts(layouts);
}
static void x_win_move(int width, int height)
{
int x, y;
screen_info scr;
x_screen_info(&scr);
/* calculate window position */
if (xctx.geometry.mask & XNegative) {
x = (scr.dim.x + (scr.dim.w - width)) + xctx.geometry.x;
} else {
XSetFont(dc->dpy, dc->gc, dc->font.xfont->fid);
XDrawString(dc->dpy, dc->canvas, dc->gc, x, y, text, n);
x = scr.dim.x + xctx.geometry.x;
}
if (xctx.geometry.mask & YNegative) {
y = scr.dim.y + (scr.dim.h + xctx.geometry.y) - height;
} else {
y = scr.dim.y + xctx.geometry.y;
}
/* move and map window */
if (x != xctx.window_dim.x || y != xctx.window_dim.y
|| width != xctx.window_dim.w || height != xctx.window_dim.h) {
XMoveWindow(xctx.dc->dpy, xctx.win, x, y);
xctx.window_dim.x = x;
xctx.window_dim.y = y;
xctx.window_dim.h = height;
xctx.window_dim.w = width;
}
}
void eprintf(const char *fmt, ...)
{
va_list ap;
@ -253,53 +349,12 @@ void setopacity(DC * dc, Window win, unsigned long opacity)
PropModeReplace, (unsigned char *)&opacity, 1L);
}
void mapdc(DC * dc, Window win, unsigned int w, unsigned int h)
{
XCopyArea(dc->dpy, dc->canvas, win, dc->gc, 0, 0, w, h, 0, 0);
}
void resizedc(DC * dc, unsigned int w, unsigned int h)
{
int screen = DefaultScreen(dc->dpy);
if (dc->canvas)
XFreePixmap(dc->dpy, dc->canvas);
dc->w = w;
dc->h = h;
dc->canvas = XCreatePixmap(dc->dpy, DefaultRootWindow(dc->dpy), w, h,
DefaultDepth(dc->dpy, screen));
if (dc->xftdraw) {
XftDrawDestroy(dc->xftdraw);
}
if (dc->font.xft_font) {
dc->xftdraw =
XftDrawCreate(dc->dpy, dc->canvas,
DefaultVisual(dc->dpy, screen),
DefaultColormap(dc->dpy, screen));
if (!(dc->xftdraw))
eprintf("error, cannot create xft drawable\n");
}
}
int textnw(DC * dc, const char *text, size_t len)
{
if (dc->font.xft_font) {
XGlyphInfo gi;
XftTextExtentsUtf8(dc->dpy, dc->font.xft_font,
(const FcChar8 *)text, len, &gi);
return gi.width;
} else if (dc->font.set) {
XRectangle r;
XmbTextExtents(dc->font.set, text, len, NULL, &r);
return r.width;
}
return XTextWidth(dc->font.xfont, text, len);
}
int textw(DC * dc, const char *text)
{
return textnw(dc, text, strlen(text)) + dc->font.height;
}
/*
* Helper function to use glib's mainloop mechanic
@ -609,373 +664,10 @@ void x_setup(void)
xctx.screensaver_info = XScreenSaverAllocInfo();
x_win_setup();
x_cairo_setup();
x_shortcut_grab(&settings.history_ks);
}
/* TODO comments and naming */
GSList *do_word_wrap(char *text, int max_width)
{
GSList *result = NULL;
g_strstrip(text);
if (!text || strlen(text) == 0)
return 0;
char *begin = text;
char *end = text;
while (true) {
if (*end == '\0') {
result = g_slist_append(result, g_strdup(begin));
break;
}
if (*end == '\n') {
*end = ' ';
result =
g_slist_append(result,
g_strndup(begin, end - begin));
begin = ++end;
}
if (settings.word_wrap && max_width > 0
&& textnw(xctx.dc, begin, (end - begin) + 1) > max_width) {
/* find previous space */
char *space = end;
while (space > begin && !isspace(*space))
space--;
if (space > begin) {
end = space;
}
result =
g_slist_append(result,
g_strndup(begin, end - begin));
begin = ++end;
}
end++;
}
return result;
}
int calculate_x_offset(int line_width, int text_width)
{
int leftover = line_width - text_width;
struct timeval t;
float pos;
/* If the text is wider than the frame, bouncing is enabled and word_wrap disabled */
if (line_width < text_width && settings.bounce_freq > 0.0001
&& !settings.word_wrap) {
gettimeofday(&t, NULL);
pos =
((t.tv_sec % 100) * 1e6 +
t.tv_usec) / (1e6 / settings.bounce_freq);
return (1 + sinf(2 * 3.14159 * pos)) * leftover / 2;
}
switch (settings.align) {
case left:
return settings.frame_width + settings.h_padding;
case center:
return settings.frame_width + settings.h_padding +
(leftover / 2);
case right:
return settings.frame_width + settings.h_padding + leftover;
default:
/* this can't happen */
return 0;
}
}
unsigned long calculate_foreground_color(unsigned long source_color)
{
Colormap cmap =
DefaultColormap(xctx.dc->dpy, DefaultScreen(xctx.dc->dpy));
XColor color;
color.pixel = source_color;
XQueryColor(xctx.dc->dpy, cmap, &color);
int c_delta = 10000;
/* do we need to darken or brighten the colors? */
int darken = (color.red + color.green + color.blue) / 3 > 65535 / 2;
if (darken) {
if (color.red - c_delta < 0)
color.red = 0;
else
color.red -= c_delta;
if (color.green - c_delta < 0)
color.green = 0;
else
color.green -= c_delta;
if (color.blue - c_delta < 0)
color.blue = 0;
else
color.blue -= c_delta;
} else {
if (color.red + c_delta > 65535)
color.red = 65535;
else
color.red += c_delta;
if (color.green + c_delta > 65535)
color.green = 65535;
else
color.green += c_delta;
if (color.blue + c_delta > 65535)
color.green = 65535;
else
color.green += c_delta;
}
color.pixel = 0;
XAllocColor(xctx.dc->dpy, cmap, &color);
return color.pixel;
}
int calculate_width(void)
{
screen_info scr;
x_screen_info(&scr);
if (xctx.geometry.mask & WidthValue && xctx.geometry.w == 0) {
/* dynamic width */
return 0;
} else if (xctx.geometry.mask & WidthValue) {
/* fixed width */
if (xctx.geometry.negative_width) {
return scr.dim.w - xctx.geometry.w;
} else {
return xctx.geometry.w;
}
} else {
/* across the screen */
return scr.dim.w;
}
}
void move_and_map(int width, int height)
{
int x, y;
screen_info scr;
x_screen_info(&scr);
/* calculate window position */
if (xctx.geometry.mask & XNegative) {
x = (scr.dim.x + (scr.dim.w - width)) + xctx.geometry.x;
} else {
x = scr.dim.x + xctx.geometry.x;
}
if (xctx.geometry.mask & YNegative) {
y = scr.dim.y + (scr.dim.h + xctx.geometry.y) - height;
} else {
y = scr.dim.y + xctx.geometry.y;
}
/* move and map window */
if (x != xctx.window_dim.x || y != xctx.window_dim.y
|| width != xctx.window_dim.w || height != xctx.window_dim.h) {
XResizeWindow(xctx.dc->dpy, xctx.win, width, height);
XMoveWindow(xctx.dc->dpy, xctx.win, x, y);
xctx.window_dim.x = x;
xctx.window_dim.y = y;
xctx.window_dim.h = height;
xctx.window_dim.w = width;
}
mapdc(xctx.dc, xctx.win, width, height);
}
GSList *generate_render_texts(int width)
{
GSList *render_texts = NULL;
for (GList * iter = g_queue_peek_head_link(displayed); iter;
iter = iter->next) {
render_text *rt = g_malloc(sizeof(render_text));
notification *n = iter->data;
notification_update_text_to_render(n);
rt->colors = n->colors;
char *text = n->text_to_render;
rt->lines = do_word_wrap(text, width);
render_texts = g_slist_append(render_texts, rt);
}
/* add (x more) */
if (settings.indicate_hidden && queue->length > 0) {
if (xctx.geometry.h != 1) {
render_text *rt = g_malloc(sizeof(render_text));
rt->colors =
((render_text *) g_slist_last(render_texts)->data)->
colors;
rt->lines =
g_slist_append(NULL,
g_strdup_printf("%d more)",
queue->length));
render_texts = g_slist_append(render_texts, rt);
} else {
GSList *last_lines =
((render_text *) g_slist_last(render_texts)->data)->
lines;
GSList *last_line = g_slist_last(last_lines);
char *old = last_line->data;
char *new =
g_strdup_printf("%s (%d more)", old, queue->length);
free(old);
last_line->data = new;
}
}
return render_texts;
}
void free_render_text(void *data)
{
g_slist_free_full(((render_text *) data)->lines, g_free);
}
void free_render_texts(GSList * texts)
{
g_slist_free_full(texts, free_render_text);
}
void x_win_draw(void)
{
int outer_width = calculate_width();
screen_info scr;
x_screen_info(&scr);
settings.line_height = MAX(settings.line_height, xctx.font_h);
int width;
if (outer_width == 0)
width = 0;
else
width =
outer_width - (2 * settings.frame_width) -
(2 * settings.h_padding);
GSList *texts = generate_render_texts(width);
int line_count = 0;
for (GSList * iter = texts; iter; iter = iter->next) {
render_text *tmp = iter->data;
line_count += g_slist_length(tmp->lines);
}
/* if we have a dynamic width, calculate the actual width */
if (width == 0) {
for (GSList * iter = texts; iter; iter = iter->next) {
GSList *lines = ((render_text *) iter->data)->lines;
for (GSList * iiter = lines; iiter; iiter = iiter->next)
width = MAX(width, textw(xctx.dc, iiter->data));
}
outer_width =
width + (2 * settings.frame_width) +
(2 * settings.h_padding);
}
/* resize xctx.dc to correct width */
int height = (line_count * settings.line_height)
+ displayed->length * 2 * settings.padding
+
((settings.indicate_hidden && queue->length > 0
&& xctx.geometry.h != 1) ? 2 * settings.padding : 0)
+ (settings.separator_height * (displayed->length - 1))
+ (2 * settings.frame_width);
resizedc(xctx.dc, outer_width, height);
/* draw frame
* this draws a big box in the frame color which get filled with
* smaller boxes of the notification colors
*/
xctx.dc->y = 0;
xctx.dc->x = 0;
if (settings.frame_width > 0) {
drawrect(xctx.dc, 0, 0, outer_width, height, true, xctx.framec);
}
xctx.dc->y = settings.frame_width;
xctx.dc->x = settings.frame_width;
for (GSList * iter = texts; iter; iter = iter->next) {
render_text *cur = iter->data;
ColorSet *colors = cur->colors;
int line_count = 0;
bool first_line = true;
for (GSList * iiter = cur->lines; iiter; iiter = iiter->next) {
char *line = iiter->data;
line_count++;
int pad = 0;
bool last_line = iiter->next == NULL;
if (first_line && last_line)
pad = 2 * settings.padding;
else if (first_line || last_line)
pad = settings.padding;
xctx.dc->x = settings.frame_width;
/* draw background */
drawrect(xctx.dc, 0, 0,
width + (2 * settings.h_padding),
pad + settings.line_height, true, colors->BG);
/* draw text */
xctx.dc->x =
calculate_x_offset(width, textw(xctx.dc, line));
xctx.dc->y +=
((settings.line_height - xctx.font_h) / 2);
xctx.dc->y += first_line ? settings.padding : 0;
drawtextn(xctx.dc, line, strlen(line), colors);
xctx.dc->y +=
settings.line_height -
((settings.line_height - xctx.font_h) / 2);
xctx.dc->y += last_line ? settings.padding : 0;
first_line = false;
}
/* draw separator */
if (settings.separator_height > 0 && iter->next) {
xctx.dc->x = settings.frame_width;
double color;
if (settings.sep_color == AUTO)
color = calculate_foreground_color(colors->BG);
else if (settings.sep_color == FOREGROUND)
color = colors->FG;
else if (settings.sep_color == FRAME)
color = xctx.framec;
else {
/* CUSTOM */
color = xctx.sep_custom_col;
}
drawrect(xctx.dc, 0, 0,
width + (2 * settings.h_padding),
settings.separator_height, true, color);
xctx.dc->y += settings.separator_height;
}
}
move_and_map(outer_width, height);
free_render_texts(texts);
}
/*
* Setup the window
*/