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Diffstat (limited to 'src/core/effects.c')
| -rw-r--r-- | src/core/effects.c | 735 |
1 files changed, 0 insertions, 735 deletions
diff --git a/src/core/effects.c b/src/core/effects.c deleted file mode 100644 index be369799..00000000 --- a/src/core/effects.c +++ /dev/null @@ -1,735 +0,0 @@ -/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ - -/** - * \file effects.c "Special effects" other than compositor effects. - * - * Before we had a serious compositor, we supported swooping - * rectangles for minimising and so on. These are still supported - * today, even when the compositor is enabled. The file contains two - * parts: - * - * 1) A set of functions, each of which implements a special effect. - * (Only the minimize function does anything interesting; we should - * probably get rid of the rest.) - * - * 2) A set of functions for moving a highlighted wireframe box around - * the screen, optionally with height and width shown in the middle. - * This is used for moving and resizing when reduced_resources is set. - * - * There was formerly a system which allowed callers to drop in their - * own handlers for various things; it was never used (people who want - * their own handlers can just modify this file, after all) and it added - * a good deal of extra complexity, so it has been removed. If you want it, - * it can be found in svn r3769. - * - * Once upon a time there were three different ways of drawing the box - * animation: window wireframe, window opaque, and root. People who had - * the shape extension theoretically had the choice of all three, and - * people who didn't weren't given the choice of the wireframe option. - * In practice, though, the opaque animation was never perfect, so it came - * down to the wireframe option for those who had the extension and - * the root option for those who didn't; there was actually no way of choosing - * any other option anyway. Work on the opaque animation stopped in 2002; - * anyone who wants something like that these days will be using the - * compositor anyway. - * - * In svn r3769 this was made explicit. - */ - -/* - * Copyright (C) 2001 Anders Carlsson, Havoc Pennington - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License as - * published by the Free Software Foundation; either version 2 of the - * License, or (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA - * 02111-1307, USA. - */ - -#include <config.h> -#include "effects.h" -#include "display-private.h" -#include "ui.h" -#include "window-private.h" -#include "prefs.h" - -#ifdef HAVE_SHAPE -#include <X11/extensions/shape.h> -#endif - -#define META_MINIMIZE_ANIMATION_LENGTH 0.25 -#define META_SHADE_ANIMATION_LENGTH 0.2 - -#include <string.h> - -typedef struct MetaEffect MetaEffect; -typedef struct MetaEffectPriv MetaEffectPriv; - -typedef struct -{ - MetaScreen *screen; - - double millisecs_duration; - GTimeVal start_time; - -#ifdef HAVE_SHAPE - /** For wireframe window */ - Window wireframe_xwindow; -#else - /** Rectangle to erase */ - MetaRectangle last_rect; - - /** First time we've plotted anything in this animation? */ - gboolean first_time; - - /** For wireframe drawn on root window */ - GC gc; -#endif - - MetaRectangle start_rect; - MetaRectangle end_rect; - -} BoxAnimationContext; - -/** - * Information we need to know during a maximise or minimise effect. - */ -typedef struct -{ - /** This is the normal-size window. */ - MetaRectangle window_rect; - /** This is the size of the window when it's an icon. */ - MetaRectangle icon_rect; -} MetaMinimizeEffect, MetaUnminimizeEffect; - -struct MetaEffectPriv -{ - MetaEffectFinished finished; - gpointer finished_data; -}; - -struct MetaEffect -{ - /** The window the effect is applied to. */ - MetaWindow *window; - /** Which effect is happening here. */ - MetaEffectType type; - /** The effect handler can hang data here. */ - gpointer info; - - union - { - MetaMinimizeEffect minimize; - /* ... and theoretically anything else */ - } u; - - MetaEffectPriv *priv; -}; - -static void run_default_effect_handler (MetaEffect *effect); -static void run_handler (MetaEffect *effect); -static void effect_free (MetaEffect *effect); - -static MetaEffect * -create_effect (MetaEffectType type, - MetaWindow *window, - MetaEffectFinished finished, - gpointer finished_data); - -static void -draw_box_animation (MetaScreen *screen, - MetaRectangle *initial_rect, - MetaRectangle *destination_rect, - double seconds_duration); - -/** - * Creates an effect. - * - */ -static MetaEffect* -create_effect (MetaEffectType type, - MetaWindow *window, - MetaEffectFinished finished, - gpointer finished_data) -{ - MetaEffect *effect = g_new (MetaEffect, 1); - - effect->type = type; - effect->window = window; - effect->priv = g_new (MetaEffectPriv, 1); - effect->priv->finished = finished; - effect->priv->finished_data = finished_data; - - return effect; -} - -/** - * Destroys an effect. If the effect has a "finished" hook, it will be - * called before cleanup. - * - * \param effect The effect. - */ -static void -effect_free (MetaEffect *effect) -{ - if (effect->priv->finished) - effect->priv->finished (effect->priv->finished_data); - - g_free (effect->priv); - g_free (effect); -} - -void -meta_effect_run_focus (MetaWindow *window, - MetaEffectFinished finished, - gpointer data) -{ - MetaEffect *effect; - - g_return_if_fail (window != NULL); - - effect = create_effect (META_EFFECT_FOCUS, window, finished, data); - - run_handler (effect); -} - -void -meta_effect_run_minimize (MetaWindow *window, - MetaRectangle *window_rect, - MetaRectangle *icon_rect, - MetaEffectFinished finished, - gpointer data) -{ - MetaEffect *effect; - - g_return_if_fail (window != NULL); - g_return_if_fail (icon_rect != NULL); - - effect = create_effect (META_EFFECT_MINIMIZE, window, finished, data); - - effect->u.minimize.window_rect = *window_rect; - effect->u.minimize.icon_rect = *icon_rect; - - run_handler (effect); -} - -void -meta_effect_run_unminimize (MetaWindow *window, - MetaRectangle *window_rect, - MetaRectangle *icon_rect, - MetaEffectFinished finished, - gpointer data) -{ - MetaEffect *effect; - - g_return_if_fail (window != NULL); - g_return_if_fail (icon_rect != NULL); - - effect = create_effect (META_EFFECT_UNMINIMIZE, window, finished, data); - - effect->u.minimize.window_rect = *window_rect; - effect->u.minimize.icon_rect = *icon_rect; - - run_handler (effect); -} - -void -meta_effect_run_close (MetaWindow *window, - MetaEffectFinished finished, - gpointer data) -{ - MetaEffect *effect; - - g_return_if_fail (window != NULL); - - effect = create_effect (META_EFFECT_CLOSE, window, - finished, data); - - run_handler (effect); -} - - -/* old ugly minimization effect */ - -#ifdef HAVE_SHAPE -static void -update_wireframe_window (MetaDisplay *display, - Window xwindow, - const MetaRectangle *rect) -{ - XMoveResizeWindow (display->xdisplay, - xwindow, - rect->x, rect->y, - rect->width, rect->height); - -#define OUTLINE_WIDTH 3 - - if (rect->width > OUTLINE_WIDTH * 2 && - rect->height > OUTLINE_WIDTH * 2) - { - XRectangle xrect; - Region inner_xregion; - Region outer_xregion; - - inner_xregion = XCreateRegion (); - outer_xregion = XCreateRegion (); - - xrect.x = 0; - xrect.y = 0; - xrect.width = rect->width; - xrect.height = rect->height; - - XUnionRectWithRegion (&xrect, outer_xregion, outer_xregion); - - xrect.x += OUTLINE_WIDTH; - xrect.y += OUTLINE_WIDTH; - xrect.width -= OUTLINE_WIDTH * 2; - xrect.height -= OUTLINE_WIDTH * 2; - - XUnionRectWithRegion (&xrect, inner_xregion, inner_xregion); - - XSubtractRegion (outer_xregion, inner_xregion, outer_xregion); - - XShapeCombineRegion (display->xdisplay, xwindow, - ShapeBounding, 0, 0, outer_xregion, ShapeSet); - - XDestroyRegion (outer_xregion); - XDestroyRegion (inner_xregion); - } - else - { - /* Unset the shape */ - XShapeCombineMask (display->xdisplay, xwindow, - ShapeBounding, 0, 0, None, ShapeSet); - } -} -#endif - -/** - * A hack to force the X server to synchronize with the - * graphics hardware. - */ -static void -graphics_sync (BoxAnimationContext *context) -{ - XImage *image; - - image = XGetImage (context->screen->display->xdisplay, - context->screen->xroot, - 0, 0, 1, 1, - AllPlanes, ZPixmap); - - XDestroyImage (image); -} - -static gboolean -effects_draw_box_animation_timeout (BoxAnimationContext *context) -{ - double elapsed; - GTimeVal current_time; - MetaRectangle draw_rect; - double fraction; - -#ifndef HAVE_SHAPE - if (!context->first_time) - { - /* Restore the previously drawn background */ - XDrawRectangle (context->screen->display->xdisplay, - context->screen->xroot, - context->gc, - context->last_rect.x, context->last_rect.y, - context->last_rect.width, context->last_rect.height); - } - else - context->first_time = FALSE; - -#endif /* !HAVE_SHAPE */ - - g_get_current_time (¤t_time); - - /* We use milliseconds for all times */ - elapsed = - ((((double)current_time.tv_sec - context->start_time.tv_sec) * G_USEC_PER_SEC + - (current_time.tv_usec - context->start_time.tv_usec))) / 1000.0; - - if (elapsed < 0) - { - /* Probably the system clock was set backwards? */ - meta_warning ("System clock seemed to go backwards?\n"); - elapsed = G_MAXDOUBLE; /* definitely done. */ - } - - if (elapsed > context->millisecs_duration) - { - /* All done */ -#ifdef HAVE_SHAPE - XDestroyWindow (context->screen->display->xdisplay, - context->wireframe_xwindow); -#else - meta_display_ungrab (context->screen->display); - meta_ui_pop_delay_exposes (context->screen->ui); - XFreeGC (context->screen->display->xdisplay, - context->gc); -#endif /* !HAVE_SHAPE */ - - graphics_sync (context); - - g_free (context); - return FALSE; - } - - g_assert (context->millisecs_duration > 0.0); - fraction = elapsed / context->millisecs_duration; - - draw_rect = context->start_rect; - - /* Now add a delta proportional to elapsed time. */ - draw_rect.x += (context->end_rect.x - context->start_rect.x) * fraction; - draw_rect.y += (context->end_rect.y - context->start_rect.y) * fraction; - draw_rect.width += (context->end_rect.width - context->start_rect.width) * fraction; - draw_rect.height += (context->end_rect.height - context->start_rect.height) * fraction; - - /* don't confuse X or gdk-pixbuf with bogus rectangles */ - if (draw_rect.width < 1) - draw_rect.width = 1; - if (draw_rect.height < 1) - draw_rect.height = 1; - -#ifdef HAVE_SHAPE - update_wireframe_window (context->screen->display, - context->wireframe_xwindow, - &draw_rect); -#else - context->last_rect = draw_rect; - - /* Draw the rectangle */ - XDrawRectangle (context->screen->display->xdisplay, - context->screen->xroot, - context->gc, - draw_rect.x, draw_rect.y, - draw_rect.width, draw_rect.height); - -#endif /* !HAVE_SHAPE */ - - /* kick changes onto the server */ - graphics_sync (context); - - return TRUE; -} - -void -draw_box_animation (MetaScreen *screen, - MetaRectangle *initial_rect, - MetaRectangle *destination_rect, - double seconds_duration) -{ - BoxAnimationContext *context; - -#ifdef HAVE_SHAPE - XSetWindowAttributes attrs; -#else - XGCValues gc_values; -#endif - - g_return_if_fail (seconds_duration > 0.0); - - if (g_getenv ("METACITY_DEBUG_EFFECTS")) - seconds_duration *= 10; /* slow things down */ - - /* Create the animation context */ - context = g_new0 (BoxAnimationContext, 1); - - context->screen = screen; - - context->millisecs_duration = seconds_duration * 1000.0; - - context->start_rect = *initial_rect; - context->end_rect = *destination_rect; - -#ifdef HAVE_SHAPE - - attrs.override_redirect = True; - attrs.background_pixel = BlackPixel (screen->display->xdisplay, - screen->number); - - context->wireframe_xwindow = XCreateWindow (screen->display->xdisplay, - screen->xroot, - initial_rect->x, - initial_rect->y, - initial_rect->width, - initial_rect->height, - 0, - CopyFromParent, - CopyFromParent, - (Visual *)CopyFromParent, - CWOverrideRedirect | CWBackPixel, - &attrs); - - update_wireframe_window (screen->display, - context->wireframe_xwindow, - initial_rect); - - XMapWindow (screen->display->xdisplay, - context->wireframe_xwindow); - -#else /* !HAVE_SHAPE */ - - context->first_time = TRUE; - gc_values.subwindow_mode = IncludeInferiors; - gc_values.function = GXinvert; - - context->gc = XCreateGC (screen->display->xdisplay, - screen->xroot, - GCSubwindowMode | GCFunction, - &gc_values); - - /* Grab the X server to avoid screen dirt */ - meta_display_grab (context->screen->display); - meta_ui_push_delay_exposes (context->screen->ui); -#endif - - /* Do this only after we get the pixbuf from the server, - * so that the animation doesn't get truncated. - */ - g_get_current_time (&context->start_time); - - /* Add the timeout - a short one, could even use an idle, - * but this is maybe more CPU-friendly. - */ - g_timeout_add (15, - (GSourceFunc)effects_draw_box_animation_timeout, - context); - - /* kick changes onto the server */ - XFlush (context->screen->display->xdisplay); -} - -void -meta_effects_begin_wireframe (MetaScreen *screen, - const MetaRectangle *rect, - int width, - int height) -{ - /* Grab the X server to avoid screen dirt */ - meta_display_grab (screen->display); - meta_ui_push_delay_exposes (screen->ui); - - meta_effects_update_wireframe (screen, - NULL, -1, -1, - rect, width, height); -} - -static void -draw_xor_rect (MetaScreen *screen, - const MetaRectangle *rect, - int width, - int height) -{ - /* The lines in the center can't overlap the rectangle or each - * other, or the XOR gets reversed. So we have to draw things - * a bit oddly. - */ - XSegment segments[8]; - MetaRectangle shrunk_rect; - int i; - -#define LINE_WIDTH META_WIREFRAME_XOR_LINE_WIDTH - - /* We don't want the wireframe going outside the window area. - * It makes it harder for the user to position windows and it exposes other - * annoying bugs. - */ - shrunk_rect = *rect; - - shrunk_rect.x += LINE_WIDTH / 2 + LINE_WIDTH % 2; - shrunk_rect.y += LINE_WIDTH / 2 + LINE_WIDTH % 2; - shrunk_rect.width -= LINE_WIDTH + 2 * (LINE_WIDTH % 2); - shrunk_rect.height -= LINE_WIDTH + 2 * (LINE_WIDTH % 2); - - XDrawRectangle (screen->display->xdisplay, - screen->xroot, - screen->root_xor_gc, - shrunk_rect.x, shrunk_rect.y, - shrunk_rect.width, shrunk_rect.height); - - /* Don't put lines inside small rectangles where they won't fit */ - if (shrunk_rect.width < (LINE_WIDTH * 4) || - shrunk_rect.height < (LINE_WIDTH * 4)) - return; - - if ((width >= 0) && (height >= 0)) - { - XGCValues gc_values = { 0 }; - - if (XGetGCValues (screen->display->xdisplay, - screen->root_xor_gc, - GCFont, &gc_values)) - { - char *text; - int text_length; - - XFontStruct *font_struct; - int text_width, text_height; - int box_x, box_y; - int box_width, box_height; - - font_struct = XQueryFont (screen->display->xdisplay, - gc_values.font); - - if (font_struct != NULL) - { - text = g_strdup_printf ("%d x %d", width, height); - text_length = strlen (text); - - text_width = text_length * font_struct->max_bounds.width; - text_height = font_struct->max_bounds.descent + - font_struct->max_bounds.ascent; - - box_width = text_width + 2 * LINE_WIDTH; - box_height = text_height + 2 * LINE_WIDTH; - - - box_x = shrunk_rect.x + (shrunk_rect.width - box_width) / 2; - box_y = shrunk_rect.y + (shrunk_rect.height - box_height) / 2; - - if ((box_width < shrunk_rect.width) && - (box_height < shrunk_rect.height)) - { - XFillRectangle (screen->display->xdisplay, - screen->xroot, - screen->root_xor_gc, - box_x, box_y, - box_width, box_height); - XDrawString (screen->display->xdisplay, - screen->xroot, - screen->root_xor_gc, - box_x + LINE_WIDTH, - box_y + LINE_WIDTH + font_struct->max_bounds.ascent, - text, text_length); - } - - g_free (text); - - XFreeFontInfo (NULL, font_struct, 1); - - if ((box_width + LINE_WIDTH) >= (shrunk_rect.width / 3)) - return; - - if ((box_height + LINE_WIDTH) >= (shrunk_rect.height / 3)) - return; - } - } - } - - /* Two vertical lines at 1/3 and 2/3 */ - segments[0].x1 = shrunk_rect.x + shrunk_rect.width / 3; - segments[0].y1 = shrunk_rect.y + LINE_WIDTH / 2 + LINE_WIDTH % 2; - segments[0].x2 = segments[0].x1; - segments[0].y2 = shrunk_rect.y + shrunk_rect.height - LINE_WIDTH / 2; - - segments[1] = segments[0]; - segments[1].x1 = shrunk_rect.x + (shrunk_rect.width / 3) * 2; - segments[1].x2 = segments[1].x1; - - /* Now make two horizontal lines at 1/3 and 2/3, but not - * overlapping the verticals - */ - - segments[2].x1 = shrunk_rect.x + LINE_WIDTH / 2 + LINE_WIDTH % 2; - segments[2].x2 = segments[0].x1 - LINE_WIDTH / 2; - segments[2].y1 = shrunk_rect.y + shrunk_rect.height / 3; - segments[2].y2 = segments[2].y1; - - segments[3] = segments[2]; - segments[3].x1 = segments[2].x2 + LINE_WIDTH; - segments[3].x2 = segments[1].x1 - LINE_WIDTH / 2; - - segments[4] = segments[3]; - segments[4].x1 = segments[3].x2 + LINE_WIDTH; - segments[4].x2 = shrunk_rect.x + shrunk_rect.width - LINE_WIDTH / 2; - - /* Second horizontal line is just like the first, but - * shifted down - */ - i = 5; - while (i < 8) - { - segments[i] = segments[i - 3]; - segments[i].y1 = shrunk_rect.y + (shrunk_rect.height / 3) * 2; - segments[i].y2 = segments[i].y1; - ++i; - } - - XDrawSegments (screen->display->xdisplay, - screen->xroot, - screen->root_xor_gc, - segments, - G_N_ELEMENTS (segments)); -} - -void -meta_effects_update_wireframe (MetaScreen *screen, - const MetaRectangle *old_rect, - int old_width, - int old_height, - const MetaRectangle *new_rect, - int new_width, - int new_height) -{ - if (old_rect) - draw_xor_rect (screen, old_rect, old_width, old_height); - - if (new_rect) - draw_xor_rect (screen, new_rect, new_width, new_height); - - XFlush (screen->display->xdisplay); -} - -void -meta_effects_end_wireframe (MetaScreen *screen, - const MetaRectangle *old_rect, - int old_width, - int old_height) -{ - meta_effects_update_wireframe (screen, - old_rect, old_width, old_height, - NULL, -1, -1); - - meta_display_ungrab (screen->display); - meta_ui_pop_delay_exposes (screen->ui); -} - -static void -run_default_effect_handler (MetaEffect *effect) -{ - switch (effect->type) - { - case META_EFFECT_MINIMIZE: - draw_box_animation (effect->window->screen, - &(effect->u.minimize.window_rect), - &(effect->u.minimize.icon_rect), - META_MINIMIZE_ANIMATION_LENGTH); - break; - - default: - break; - } -} - -static void -run_handler (MetaEffect *effect) -{ - if (meta_prefs_get_gnome_animations ()) - run_default_effect_handler (effect); - - effect_free (effect); -} |