739af13714
*fix* two memleaks *fix* some code beautification git-svn-id: http://tint2.googlecode.com/svn/trunk@327 121b4492-b84c-0410-8b4c-0d4edfb3f3cc
313 lines
8.8 KiB
C
313 lines
8.8 KiB
C
/**************************************************************************
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*
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* Copyright (C) 2009 Andreas.Fink (Andreas.Fink85@gmail.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**************************************************************************/
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <stdlib.h>
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#include <cairo.h>
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#include <cairo-xlib.h>
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#include "server.h"
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#include "tooltip.h"
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#include "panel.h"
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#include "timer.h"
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static int x, y, width, height;
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// the next functions are helper functions for tooltip handling
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void start_show_timeout();
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void start_hide_timeout();
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void stop_tooltip_timeout();
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void tooltip_copy_text(Area* area);
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// give the tooltip some reasonable default values
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Tooltip g_tooltip = {
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.tooltip_text = 0,
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.area = 0,
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.panel = 0,
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.window = 0,
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.show_timeout_msec = 0,
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.hide_timeout_msec = 0,
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.enabled = False,
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.mapped = False,
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.paddingx = 0,
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.paddingy = 0,
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.font_color = { .color={1, 1, 1}, .alpha=1 },
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.bg = 0,
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.font_desc = 0,
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.timeout = 0
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};
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void init_tooltip()
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{
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if (!g_tooltip.font_desc)
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g_tooltip.font_desc = pango_font_description_from_string("sans 10");
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XSetWindowAttributes attr;
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attr.override_redirect = True;
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attr.event_mask = StructureNotifyMask;
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attr.colormap = server.colormap;
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attr.background_pixel = 0;
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attr.border_pixel = 0;
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unsigned long mask = CWEventMask|CWColormap|CWBorderPixel|CWBackPixel|CWOverrideRedirect;
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if (g_tooltip.window) XDestroyWindow(server.dsp, g_tooltip.window);
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g_tooltip.window = XCreateWindow(server.dsp, server.root_win, 0, 0, 100, 20, 0, server.depth, InputOutput, server.visual, mask, &attr);
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}
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void cleanup_tooltip()
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{
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stop_tooltip_timeout();
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tooltip_hide(0);
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g_tooltip.enabled = False;
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tooltip_copy_text(0);
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if (g_tooltip.window) {
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XDestroyWindow(server.dsp, g_tooltip.window);
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g_tooltip.window = 0;
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}
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if (g_tooltip.font_desc) {
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pango_font_description_free(g_tooltip.font_desc);
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g_tooltip.font_desc = 0;
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}
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}
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void tooltip_trigger_show(Area* area, Panel* p, int x_root, int y_root)
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{
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x = x_root;
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y = y_root;
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g_tooltip.panel = p;
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if (g_tooltip.mapped && g_tooltip.area != area) {
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tooltip_copy_text(area);
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tooltip_update();
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stop_tooltip_timeout();
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}
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else if (!g_tooltip.mapped) {
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start_show_timeout();
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}
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}
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void tooltip_show(void* arg)
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{
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int mx, my;
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Window w;
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XTranslateCoordinates( server.dsp, server.root_win, g_tooltip.panel->main_win, x, y, &mx, &my, &w);
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Area* area = click_area(g_tooltip.panel, mx, my);
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stop_tooltip_timeout();
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if (!g_tooltip.mapped && area->_get_tooltip_text) {
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tooltip_copy_text(area);
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g_tooltip.mapped = True;
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XMapWindow(server.dsp, g_tooltip.window);
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XFlush(server.dsp);
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}
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}
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void tooltip_update_geometry()
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{
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cairo_surface_t *cs;
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cairo_t *c;
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PangoLayout* layout;
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cs = cairo_xlib_surface_create(server.dsp, g_tooltip.window, server.visual, width, height);
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c = cairo_create(cs);
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layout = pango_cairo_create_layout(c);
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pango_layout_set_font_description(layout, g_tooltip.font_desc);
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pango_layout_set_text(layout, g_tooltip.tooltip_text, -1);
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PangoRectangle r1, r2;
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pango_layout_get_pixel_extents(layout, &r1, &r2);
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width = 2*g_tooltip.bg->border.width + 2*g_tooltip.paddingx + r2.width;
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height = 2*g_tooltip.bg->border.width + 2*g_tooltip.paddingy + r2.height;
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Panel* panel = g_tooltip.panel;
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if (panel_horizontal && panel_position & BOTTOM)
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y = panel->posy-height;
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else if (panel_horizontal && panel_position & TOP)
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y = panel->posy + panel->area.height;
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else if (panel_position & LEFT)
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x = panel->posx + panel->area.width;
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else
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x = panel->posx - width;
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g_object_unref(layout);
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cairo_destroy(c);
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cairo_surface_destroy(cs);
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}
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void tooltip_adjust_geometry()
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{
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// adjust coordinates and size to not go offscreen
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// it seems quite impossible that the height needs to be adjusted, but we do it anyway.
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int min_x, min_y, max_width, max_height;
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Panel* panel = g_tooltip.panel;
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int screen_width = server.monitor[panel->monitor].x + server.monitor[panel->monitor].width;
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int screen_height = server.monitor[panel->monitor].y + server.monitor[panel->monitor].height;
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if ( x+width <= screen_width && y+height <= screen_height && x>=0 && y>=0)
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return; // no adjustment needed
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if (panel_horizontal) {
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min_x=0;
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max_width=screen_width;
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max_height=screen_height-panel->area.height;
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if (panel_position & BOTTOM)
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min_y=0;
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else
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min_y=panel->area.height;
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}
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else {
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max_width=screen_width-panel->area.width;
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min_y=0;
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max_height=screen_height;
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if (panel_position & LEFT)
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min_x=panel->area.width;
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else
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min_x=0;
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}
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if (x+width > server.monitor[panel->monitor].x + server.monitor[panel->monitor].width)
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x = server.monitor[panel->monitor].x + server.monitor[panel->monitor].width - width;
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if ( y+height > server.monitor[panel->monitor].y + server.monitor[panel->monitor].height)
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y = server.monitor[panel->monitor].y + server.monitor[panel->monitor].height - height;
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if (x<min_x)
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x=min_x;
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if (width>max_width)
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width = max_width;
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if (y<min_y)
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y=min_y;
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if (height>max_height)
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height=max_height;
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}
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void tooltip_update()
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{
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if (!g_tooltip.tooltip_text) {
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tooltip_hide(0);
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return;
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}
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tooltip_update_geometry();
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tooltip_adjust_geometry();
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XMoveResizeWindow(server.dsp, g_tooltip.window, x, y, width, height);
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// Stuff for drawing the tooltip
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cairo_surface_t *cs;
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cairo_t *c;
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PangoLayout* layout;
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cs = cairo_xlib_surface_create(server.dsp, g_tooltip.window, server.visual, width, height);
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c = cairo_create(cs);
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Color bc = g_tooltip.bg->back;
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Border b = g_tooltip.bg->border;
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if (real_transparency) {
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clear_pixmap(g_tooltip.window, 0, 0, width, height);
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draw_rect(c, b.width, b.width, width-2*b.width, height-2*b.width, b.rounded-b.width/1.571);
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cairo_set_source_rgba(c, bc.color[0], bc.color[1], bc.color[2], bc.alpha);
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}
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else {
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cairo_rectangle(c, 0., 0, width, height);
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cairo_set_source_rgb(c, bc.color[0], bc.color[1], bc.color[2]);
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}
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cairo_fill(c);
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cairo_set_line_width(c, b.width);
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if (real_transparency) draw_rect(c, b.width/2.0, b.width/2.0, width - b.width, height - b.width, b.rounded);
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else cairo_rectangle(c, b.width/2.0, b.width/2.0, width-b.width, height-b.width);
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cairo_set_source_rgba(c, b.color[0], b.color[1], b.color[2], b.alpha);
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cairo_stroke(c);
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Color fc = g_tooltip.font_color;
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cairo_set_source_rgba(c, fc.color[0], fc.color[1], fc.color[2], fc.alpha);
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layout = pango_cairo_create_layout(c);
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pango_layout_set_font_description(layout, g_tooltip.font_desc);
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pango_layout_set_text(layout, g_tooltip.tooltip_text, -1);
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PangoRectangle r1, r2;
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pango_layout_get_pixel_extents(layout, &r1, &r2);
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pango_layout_set_width(layout, width*PANGO_SCALE);
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pango_layout_set_height(layout, height*PANGO_SCALE);
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pango_layout_set_ellipsize(layout, PANGO_ELLIPSIZE_END);
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// I do not know why this is the right way, but with the below cairo_move_to it seems to be centered (horiz. and vert.)
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cairo_move_to(c, -r1.x/2+g_tooltip.bg->border.width+g_tooltip.paddingx, -r1.y/2+g_tooltip.bg->border.width+g_tooltip.paddingy);
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pango_cairo_show_layout (c, layout);
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g_object_unref (layout);
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cairo_destroy (c);
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cairo_surface_destroy (cs);
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}
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void tooltip_trigger_hide(Tooltip* tooltip)
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{
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if (g_tooltip.mapped) {
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tooltip_copy_text(0);
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start_hide_timeout();
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}
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else {
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// tooltip not visible yet, but maybe a timeout is still pending
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stop_tooltip_timeout();
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}
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}
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void tooltip_hide(void* arg)
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{
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stop_tooltip_timeout();
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if (g_tooltip.mapped) {
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g_tooltip.mapped = False;
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XUnmapWindow(server.dsp, g_tooltip.window);
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XFlush(server.dsp);
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}
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}
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void start_show_timeout()
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{
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if (g_tooltip.timeout)
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change_timeout(g_tooltip.timeout, g_tooltip.show_timeout_msec, 0, tooltip_show, 0);
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else
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g_tooltip.timeout = add_timeout(g_tooltip.show_timeout_msec, 0, tooltip_show, 0);
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}
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void start_hide_timeout()
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{
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if (g_tooltip.timeout)
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change_timeout(g_tooltip.timeout, g_tooltip.hide_timeout_msec, 0, tooltip_hide, 0);
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else
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g_tooltip.timeout = add_timeout(g_tooltip.hide_timeout_msec, 0, tooltip_hide, 0);
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}
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void stop_tooltip_timeout()
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{
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if (g_tooltip.timeout) {
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stop_timeout(g_tooltip.timeout);
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g_tooltip.timeout = 0;
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}
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}
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void tooltip_copy_text(Area* area)
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{
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free(g_tooltip.tooltip_text);
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if (area && area->_get_tooltip_text)
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g_tooltip.tooltip_text = strdup(area->_get_tooltip_text(area));
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else
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g_tooltip.tooltip_text = 0;
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g_tooltip.area = area;
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}
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