swayfx/sway/border.c
2016-03-30 09:21:30 -04:00

269 lines
6.6 KiB
C

#include "border.h"
#include <wlc/wlc-render.h>
#include <cairo/cairo.h>
#include <pango/pangocairo.h>
#include <stdlib.h>
#include <stdio.h>
#include "container.h"
#include "config.h"
#include "client/pango.h"
void cairo_set_source_u32(cairo_t *cairo, uint32_t color) {
int endian = 1;
if (*(char *)&endian == 1) { // little endian
cairo_set_source_rgba(cairo,
(color >> (1*8) & 0xFF) / 255.0,
(color >> (2*8) & 0xFF) / 255.0,
(color >> (3*8) & 0xFF) / 255.0,
(color >> (0*8) & 0xFF) / 255.0);
} else { // big endian
cairo_set_source_rgba(cairo,
(color >> (0*8) & 0xFF) / 255.0,
(color >> (3*8) & 0xFF) / 255.0,
(color >> (2*8) & 0xFF) / 255.0,
(color >> (1*8) & 0xFF) / 255.0);
}
}
static cairo_t *create_border_buffer(swayc_t *view, struct wlc_geometry geo, cairo_surface_t **surface) {
cairo_t *cr;
view->border_geometry = geo;
int stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, geo.size.w);
view->border = calloc(stride * geo.size.h, sizeof(unsigned char));
if (!view->border) {
sway_log(L_DEBUG, "Unable to allocate buffer");
return NULL;
}
*surface = cairo_image_surface_create_for_data(view->border,
CAIRO_FORMAT_ARGB32, geo.size.w, geo.size.h, stride);
if (cairo_surface_status(*surface) != CAIRO_STATUS_SUCCESS) {
free(view->border);
view->border = NULL;
sway_log(L_DEBUG, "Unable to allocate surface");
return NULL;
}
cr = cairo_create(*surface);
if (cairo_status(cr) != CAIRO_STATUS_SUCCESS) {
cairo_surface_destroy(*surface);
free(view->border);
view->border = NULL;
sway_log(L_DEBUG, "Unable to create cairo context");
return NULL;
}
return cr;
}
// TODO: move to client/cairo.h when local set_source_u32 is fixed.
/**
* Renders a sharp line of any width and height.
*
* The line is drawn from (x,y) to (x+width,y+height) where width/height is 0
* if the line has a width/height of one pixel, respectively.
*/
static void render_sharp_line(cairo_t *cairo, uint32_t color, double x, double y, double width, double height) {
cairo_set_source_u32(cairo, color);
if (width > 1 && height > 1) {
cairo_rectangle(cairo, x, y, width, height);
cairo_fill(cairo);
} else {
if (width == 1) {
x += 0.5;
height += y;
width = x;
}
if (height == 1) {
y += 0.5;
width += x;
height = y;
}
cairo_move_to(cairo, x, y);
cairo_set_line_width(cairo, 1.0);
cairo_line_to(cairo, width, height);
cairo_stroke(cairo);
}
}
int get_font_text_height(const char *font) {
cairo_surface_t *surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 200, 200);
cairo_t *cr = cairo_create(surface);
int width, height;
get_text_size(cr, font, &width, &height, "Gg");
return height;
}
static void render_borders(swayc_t *view, cairo_t *cr, struct border_colors *colors) {
struct wlc_geometry *b = &view->border_geometry;
struct wlc_geometry *v = &view->actual_geometry;
// left border
int left_border = v->origin.x - b->origin.x;
if (left_border > 0) {
render_sharp_line(cr,
colors->child_border,
0, 0,
left_border,
b->size.h);
}
// right border
int right_border = b->size.w - v->size.w - left_border;
if (right_border > 0) {
render_sharp_line(cr,
colors->child_border,
b->size.w - right_border,
0,
right_border,
b->size.h);
}
// top border
int top_border = v->origin.y - b->origin.y;
if (top_border > 0) {
render_sharp_line(cr,
colors->child_border,
0, 0,
b->size.w,
top_border);
}
// bottom border
int bottom_border = b->size.h - (top_border + v->size.h);
if (bottom_border > 0) {
render_sharp_line(cr,
colors->child_border,
0,
b->size.h - bottom_border,
b->size.w,
bottom_border);
}
}
static void render_with_title_bar(swayc_t *view, cairo_t *cr, struct border_colors *colors) {
struct wlc_geometry *tb = &view->title_bar_geometry;
struct wlc_geometry *b = &view->border_geometry;
// borders
render_borders(view, cr, colors);
// title bar background
cairo_set_source_u32(cr, colors->child_border);
cairo_rectangle(cr, 0, 0, tb->size.w, tb->size.h);
cairo_fill(cr);
// header top line
render_sharp_line(cr, colors->border, 0, 0, tb->size.w, 1);
// text
if (view->name) {
int width, height;
get_text_size(cr, config->font, &width, &height, "%s", view->name);
cairo_move_to(cr, view->border_thickness, 2);
cairo_set_source_u32(cr, colors->text);
pango_printf(cr, config->font, "%s", view->name);
}
// header bottom line
render_sharp_line(cr, colors->border,
view->actual_geometry.origin.x - b->origin.x,
tb->size.h - 1,
view->actual_geometry.size.w, 1);
}
void map_update_view_border(swayc_t *view, void *data) {
if (view->type == C_VIEW) {
update_view_border(view);
}
}
void update_view_border(swayc_t *view) {
cairo_t *cr = NULL;
cairo_surface_t *surface = NULL;
if (view->border) {
free(view->border);
view->border = NULL;
}
swayc_t *focused = get_focused_view(&root_container);
swayc_t *container = swayc_parent_by_type(view, C_CONTAINER);
swayc_t *focused_inactive = NULL;
if (container) {
focused_inactive = swayc_focus_by_type(container, C_VIEW);
} else {
container = swayc_parent_by_type(view, C_WORKSPACE);
if (container) {
focused_inactive = swayc_focus_by_type(container, C_VIEW);
}
}
switch (view->border_type) {
case B_NONE:
break;
case B_PIXEL:
cr = create_border_buffer(view, view->border_geometry, &surface);
if (!cr) {
break;
}
if (focused == view) {
render_borders(view, cr, &config->border_colors.focused);
} else if (focused_inactive == view) {
render_borders(view, cr, &config->border_colors.focused_inactive);
} else {
render_borders(view, cr, &config->border_colors.unfocused);
}
break;
case B_NORMAL:
cr = create_border_buffer(view, view->border_geometry, &surface);
if (!cr) {
break;
}
if (focused == view) {
render_with_title_bar(view, cr, &config->border_colors.focused);
} else if (focused_inactive == view) {
render_with_title_bar(view, cr, &config->border_colors.focused_inactive);
} else {
render_with_title_bar(view, cr, &config->border_colors.unfocused);
}
break;
}
if (surface) {
cairo_surface_flush(surface);
cairo_surface_destroy(surface);
}
if (cr) {
cairo_destroy(cr);
}
}
void render_view_borders(wlc_handle view) {
swayc_t *c = swayc_by_handle(view);
if (!c || c->border_type == B_NONE) {
return;
}
if (c->border_type == B_NORMAL) {
// update window title
const char *new_name = wlc_view_get_title(view);
if (new_name) {
if (!c->name || strcmp(c->name, new_name) != 0) {
free(c->name);
c->name = strdup(new_name);
update_view_border(c);
}
}
}
if (c->border) {
wlc_pixels_write(WLC_RGBA8888, &c->border_geometry, c->border);
}
}