dd8f05c81d
Also, fix shell-global.c to actually compile with config.h included. Was supposed to fix bug 602802, but doesn't...
141 lines
3.7 KiB
C
141 lines
3.7 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
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#include "config.h"
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#include "shell-drawing.h"
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#include <math.h>
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void
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shell_draw_clock (ClutterCairoTexture *texture,
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int hour,
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int minute)
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{
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cairo_t *cr;
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guint width, height;
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double xc, yc, radius, hour_radius, minute_radius;
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double angle;
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clutter_cairo_texture_get_surface_size (texture, &width, &height);
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xc = (double)width / 2;
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yc = (double)height / 2;
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radius = (double)(MIN(width, height)) / 2 - 2;
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minute_radius = radius - 3;
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hour_radius = radius / 2;
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clutter_cairo_texture_clear (texture);
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cr = clutter_cairo_texture_create (texture);
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cairo_set_line_width (cr, 1.0);
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/* Outline */
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cairo_arc (cr, xc, yc, radius, 0.0, 2.0 * M_PI);
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cairo_stroke (cr);
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/* Hour hand. (We add a fraction to @hour for the minutes, then
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* convert to radians, and then subtract pi/2 because cairo's origin
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* is at 3:00, not 12:00.)
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*/
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angle = ((hour + minute / 60.0) / 12.0) * 2.0 * M_PI - M_PI / 2.0;
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cairo_move_to (cr, xc, yc);
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cairo_line_to (cr,
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xc + hour_radius * cos (angle),
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yc + hour_radius * sin (angle));
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cairo_stroke (cr);
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/* Minute hand */
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angle = (minute / 60.0) * 2.0 * M_PI - M_PI / 2.0;
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cairo_move_to (cr, xc, yc);
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cairo_line_to (cr,
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xc + minute_radius * cos (angle),
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yc + minute_radius * sin (angle));
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cairo_stroke (cr);
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cairo_destroy (cr);
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}
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void
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shell_draw_box_pointer (ClutterCairoTexture *texture,
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ShellPointerDirection direction,
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ClutterColor *border_color,
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ClutterColor *background_color)
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{
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guint width, height;
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cairo_t *cr;
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clutter_cairo_texture_get_surface_size (texture, &width, &height);
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clutter_cairo_texture_clear (texture);
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cr = clutter_cairo_texture_create (texture);
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cairo_set_line_width (cr, 1.0);
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clutter_cairo_set_source_color (cr, border_color);
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switch (direction)
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{
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case SHELL_POINTER_UP:
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cairo_move_to (cr, 0, height);
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cairo_line_to (cr, floor (width * 0.5), 0);
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cairo_line_to (cr, width, height);
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break;
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case SHELL_POINTER_DOWN:
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cairo_move_to (cr, width, 0);
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cairo_line_to (cr, floor (width * 0.5), height);
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cairo_line_to (cr, 0, 0);
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break;
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case SHELL_POINTER_LEFT:
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cairo_move_to (cr, width, height);
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cairo_line_to (cr, 0, floor (height * 0.5));
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cairo_line_to (cr, width, 0);
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break;
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case SHELL_POINTER_RIGHT:
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cairo_move_to (cr, 0, 0);
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cairo_line_to (cr, width, floor (height * 0.5));
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cairo_line_to (cr, 0, height);
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break;
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default:
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g_assert_not_reached();
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}
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cairo_stroke_preserve (cr);
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clutter_cairo_set_source_color (cr, background_color);
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cairo_fill (cr);
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cairo_destroy (cr);
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}
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static void
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hook_paint_red_border (ClutterActor *actor,
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gpointer user_data)
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{
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CoglColor color;
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ClutterGeometry geom;
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float width = 2;
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cogl_color_set_from_4ub (&color, 0xff, 0, 0, 0xc4);
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cogl_set_source_color (&color);
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clutter_actor_get_allocation_geometry (actor, &geom);
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/** clockwise order **/
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cogl_rectangle (0, 0, geom.width, width);
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cogl_rectangle (geom.width - width, width,
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geom.width, geom.height);
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cogl_rectangle (0, geom.height,
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geom.width - width, geom.height - width);
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cogl_rectangle (0, geom.height - width,
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width, width);
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}
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guint
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shell_add_hook_paint_red_border (ClutterActor *actor)
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{
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return g_signal_connect_after (G_OBJECT (actor), "paint",
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G_CALLBACK (hook_paint_red_border), NULL);
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}
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