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- /* rectangle.cpp: Handles creating rectangles on the screen.
- *
- * Copyright (C) 2014: Dalton Nell, Slop Contributors (https://github.com/naelstrof/slop/graphs/contributors).
- *
- * This file is part of Slop.
- *
- * Slop 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 3 of the License, or
- * (at your option) any later version.
- *
- * Slop 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 Slop. If not, see <http://www.gnu.org/licenses/>.
- */
- #include "rectangle.hpp"
-
- static Bool isDestroyNotify( Display* dpy, XEvent* ev, XPointer win ) {
- return ev->type == DestroyNotify && ev->xdestroywindow.window == *((Window*)win);
- }
-
- slop::Rectangle::~Rectangle() {
- if ( m_window == None ) {
- return;
- }
- // Try to erase the window before destroying it.
- XSetWindowBackground( xengine->m_display, m_window, 0 );
- XClearWindow( xengine->m_display, m_window );
- // Sleep for 0.1 seconds in hope that the rectangle was erased.
- usleep( 10000 );
- // Free up our color.
- XFreeColors( xengine->m_display, xengine->m_colormap, &m_color.pixel, 1, 0 );
- XDestroyWindow( xengine->m_display, m_window );
- XEvent event;
- // Block until the window is actually completely removed.
- XIfEvent( xengine->m_display, &event, &isDestroyNotify, (XPointer)&m_window );
- // Sleep for 0.1 seconds in hope that the screen actually cleared the window.
- usleep( 10000 );
- }
-
- slop::Rectangle::Rectangle( int sx, int sy, int ex, int ey, int border, bool highlight, float r, float g, float b, float a ) {
- m_x = std::min( sx, ex );
- m_y = std::min( sy, ey );
- m_width = std::max( sx, ex ) - m_x;
- m_height = std::max( sy, ey ) - m_y;
- m_border = border;
- m_window = None;
- m_highlight = highlight;
-
- // If we don't have a border, we don't exist, so just die.
- if ( m_border == 0 ) {
- return;
- }
-
- if ( m_highlight ) {
- m_border = 0;
- }
-
- m_color = convertColor( r, g, b );
- XSetWindowAttributes attributes;
- // Set up the window so it's our color
- attributes.background_pixel = m_color.pixel;
- // Disable window decorations.
- attributes.override_redirect = True;
- // Make sure we know when we've been successfully destroyed later!
- attributes.event_mask = StructureNotifyMask;
- unsigned long valueMask = CWBackPixel | CWOverrideRedirect | CWEventMask;
-
- // Create the window
- m_window = XCreateWindow( xengine->m_display, xengine->m_root, 0, 0, WidthOfScreen( xengine->m_screen ), HeightOfScreen( xengine->m_screen ),
- 0, CopyFromParent, InputOutput,
- CopyFromParent, valueMask, &attributes );
-
-
- if ( a < 1 ) {
- // Change the window opacity
- unsigned int cardinal_alpha = (unsigned int) (a * (unsigned int)-1) ;
- XChangeProperty( xengine->m_display, m_window, XInternAtom( xengine->m_display, "_NET_WM_WINDOW_OPACITY", 0),
- XA_CARDINAL, 32, PropModeReplace, (unsigned char*)&cardinal_alpha, 1 );
- }
-
- XClassHint classhints;
- char name[] = "slop";
- classhints.res_name = name;
- classhints.res_class = name;
- XSetClassHint( xengine->m_display, m_window, &classhints );
-
- // Now punch a hole into it so it looks like a selection rectangle, but only if we're not highlighting.
- if ( !m_highlight ) {
- XRectangle rects[4];
- // Left
- rects[0].x = m_x-m_border;
- rects[0].y = m_y-m_border;
- rects[0].width = m_border;
- rects[0].height = m_height+m_border*2;
- // Top
- rects[1].x = m_x;
- rects[1].y = m_y-m_border;
- rects[1].width = m_width+m_border;
- rects[1].height = m_border;
- // Right
- rects[2].x = m_x+m_width;
- rects[2].y = m_y-m_border;
- rects[2].width = m_border;
- rects[2].height = m_height+m_border*2;
- // Bottom
- rects[3].x = m_x;
- rects[3].y = m_y+m_height;
- rects[3].width = m_width+m_border;
- rects[3].height = m_border;
- XShapeCombineRectangles( xengine->m_display, m_window, ShapeBounding, 0, 0, rects, 4, ShapeSet, 0);
- } else {
- XRectangle rect;
- rect.x = m_x;
- rect.y = m_y;
- rect.width = m_width;
- rect.height = m_height;
- XShapeCombineRectangles( xengine->m_display, m_window, ShapeBounding, 0, 0, &rect, 1, ShapeSet, 0);
- }
- // Make it so all input falls through
- XRectangle rect;
- rect.x = rect.y = rect.width = rect.height = 0;
- XShapeCombineRectangles( xengine->m_display, m_window, ShapeInput, 0, 0, &rect, 1, ShapeSet, 0);
- XMapWindow( xengine->m_display, m_window );
- }
-
- void slop::Rectangle::setGeo( int sx, int sy, int ex, int ey ) {
- int x = std::min( sx, ex );
- int y = std::min( sy, ey );
- int w = std::max( sx, ex ) - x;
- int h = std::max( sy, ey ) - y;
-
- // Only resize or move if we have to, because they're oddly expensive.
- m_x = x;
- m_y = y;
- m_width = w;
- m_height = h;
- if ( m_border > 0 ) {
- XRectangle rects[4];
- // Left
- rects[0].x = m_x-m_border;
- rects[0].y = m_y-m_border;
- rects[0].width = m_border;
- rects[0].height = m_height+m_border*2;
- // Top
- rects[1].x = m_x;
- rects[1].y = m_y-m_border;
- rects[1].width = m_width+m_border;
- rects[1].height = m_border;
- // Right
- rects[2].x = m_x+m_width;
- rects[2].y = m_y-m_border;
- rects[2].width = m_border;
- rects[2].height = m_height+m_border*2;
- // Bottom
- rects[3].x = m_x;
- rects[3].y = m_y+m_height;
- rects[3].width = m_width+m_border;
- rects[3].height = m_border;
- XShapeCombineRectangles( xengine->m_display, m_window, ShapeBounding, 0, 0, rects, 4, ShapeSet, 0);
- } else {
- XRectangle rect;
- rect.x = m_x;
- rect.y = m_y;
- rect.width = m_width;
- rect.height = m_height;
- XShapeCombineRectangles( xengine->m_display, m_window, ShapeBounding, 0, 0, &rect, 1, ShapeSet, 0);
- }
- }
-
- XColor slop::Rectangle::convertColor( float r, float g, float b ) {
- // Convert float colors to shorts.
- short red = short( floor( r * 65535.f ) );
- short green = short( floor( g * 65535.f ) );
- short blue = short( floor( b * 65535.f ) );
- XColor color;
- color.red = red;
- color.green = green;
- color.blue = blue;
- int err = XAllocColor( xengine->m_display, xengine->m_colormap, &color );
- if ( err == BadColor ) {
- fprintf( stderr, "Couldn't allocate color of value %f,%f,%f!\n", r, g, b );
- }
- return color;
- }
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