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      1 /*-------------------------------------------------------------------------
      2  * drawElements Quality Program Tester Core
      3  * ----------------------------------------
      4  *
      5  * Copyright (c) 2016 The Khronos Group Inc.
      6  *
      7  * Licensed under the Apache License, Version 2.0 (the "License");
      8  * you may not use this file except in compliance with the License.
      9  * You may obtain a copy of the License at
     10  *
     11  *      http://www.apache.org/licenses/LICENSE-2.0
     12  *
     13  * Unless required by applicable law or agreed to in writing, software
     14  * distributed under the License is distributed on an "AS IS" BASIS,
     15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     16  * See the License for the specific language governing permissions and
     17  * limitations under the License.
     18  *
     19  *//*!
     20  * \file
     21  * \brief X11 using XCB utilities.
     22  *//*--------------------------------------------------------------------*/
     23 
     24 #include "tcuLnxX11Xcb.hpp"
     25 #include "deMemory.h"
     26 
     27 namespace tcu
     28 {
     29 namespace lnx
     30 {
     31 namespace x11
     32 {
     33 
     34 XcbDisplay::XcbDisplay (EventState& platform, const char* name)
     35 	: DisplayBase	(platform)
     36 {
     37 	m_connection						= xcb_connect(name, NULL);
     38 	const xcb_setup_t		*setup		= xcb_get_setup(m_connection);
     39 	xcb_screen_iterator_t	iterator	= xcb_setup_roots_iterator(setup);
     40 	m_screen							= iterator.data;
     41 }
     42 
     43 XcbDisplay::~XcbDisplay (void)
     44 {
     45 	xcb_disconnect (m_connection);
     46 }
     47 
     48 void XcbDisplay::processEvents (void)
     49 {
     50 	xcb_generic_event_t *ev;
     51 	while ((ev = xcb_poll_for_event(m_connection)))
     52 	{
     53 		deFree(ev);
     54 		/* Manage your event */
     55 	}
     56 }
     57 
     58 XcbWindow::XcbWindow (XcbDisplay& display, int width, int height, xcb_visualid_t* visual)
     59 	: WindowBase	()
     60 	, m_display		(display)
     61 {
     62 	xcb_connection_t*	connection = m_display.getConnection();
     63 	uint32_t			values[2];
     64 	m_window	= xcb_generate_id(connection);
     65 	m_colormap	= xcb_generate_id(connection);
     66 
     67 	if (visual == DE_NULL)
     68 		visual = &m_display.getScreen()->root_visual;
     69 
     70 	values[0] = m_display.getScreen()->white_pixel;
     71 	values[1] = XCB_EVENT_MASK_EXPOSURE | XCB_EVENT_MASK_PROPERTY_CHANGE;
     72 
     73 	xcb_create_window	(
     74 							connection,								// Connection
     75 							XCB_COPY_FROM_PARENT,					// depth (same as root)
     76 							m_window,								// window Id
     77 							display.getScreen()->root,				// parent window
     78 							0, 0,									// x, y
     79 							static_cast<uint16_t >(width),			// width
     80 							static_cast<uint16_t >(height),			// height
     81 							10,										// border_width
     82 							XCB_WINDOW_CLASS_INPUT_OUTPUT,			// class
     83 							*visual,								// visual
     84 							XCB_CW_BACK_PIXEL | XCB_CW_EVENT_MASK,	// masks
     85 							values									//not used yet
     86 						);
     87 
     88 	xcb_create_colormap	(
     89 							connection,
     90 							XCB_COLORMAP_ALLOC_NONE,
     91 							m_colormap,
     92 							m_window,
     93 							*visual
     94 						);
     95 
     96 	xcb_alloc_color_reply_t* rep = xcb_alloc_color_reply(connection, xcb_alloc_color(connection, m_colormap, 65535, 0, 0), NULL);
     97 	deFree(rep);
     98 	xcb_flush (connection);
     99 }
    100 
    101 XcbWindow::~XcbWindow (void)
    102 {
    103 	xcb_flush (m_display.getConnection());
    104 	xcb_free_colormap(m_display.getConnection(), m_colormap);
    105 	xcb_destroy_window(m_display.getConnection(), m_window);
    106 }
    107 
    108 void XcbWindow::setVisibility (bool visible)
    109 {
    110 	if (visible == m_visible)
    111 		return;
    112 
    113 	if (visible)
    114 		 xcb_map_window(m_display.getConnection(), m_window);
    115 	else
    116 		xcb_unmap_window(m_display.getConnection(), m_window);
    117 
    118 	m_visible = visible;
    119 	xcb_flush (m_display.getConnection());
    120 
    121 }
    122 
    123 void XcbWindow::processEvents (void)
    124 {
    125 	// A bit of a hack, since we don't really handle all the events.
    126 	m_display.processEvents();
    127 }
    128 
    129 void XcbWindow::getDimensions (int* width, int* height) const
    130 {
    131 	xcb_get_geometry_reply_t *geom;
    132 	geom = xcb_get_geometry_reply(m_display.getConnection(), xcb_get_geometry(m_display.getConnection(), m_window), NULL);
    133 	*height = static_cast<int>(geom->height);
    134 	*width = static_cast<int>(geom->width);
    135 	deFree(geom);
    136 }
    137 
    138 void XcbWindow::setDimensions (int width, int height)
    139 {
    140 	const uint32_t		values[]	= {static_cast<uint32_t >(width), static_cast<uint32_t >(height)};
    141 	xcb_void_cookie_t	result;
    142 	xcb_connection_t*	display		= m_display.getConnection();
    143 	result = xcb_configure_window(display, m_window, XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT, values);
    144 	DE_ASSERT(DE_NULL == xcb_request_check(display,result));
    145 	xcb_flush (display);
    146 
    147 	for(;;)
    148 	{
    149 		xcb_generic_event_t*	event = xcb_poll_for_event(display);
    150 		int						w, h;
    151 		if(event != DE_NULL)
    152 		{
    153 			if (XCB_PROPERTY_NOTIFY == (event->response_type & ~0x80))
    154 			{
    155 				const xcb_property_notify_event_t* pnEvent = (xcb_property_notify_event_t*)event;
    156 				if (pnEvent->atom == XCB_ATOM_RESOLUTION)
    157 				{
    158 					deFree(event);
    159 					break;
    160 				}
    161 			}
    162 			deFree(event);
    163 		}
    164 		getDimensions (&w,&h);
    165 		if (h==height || w==width)
    166 			break;
    167 	}
    168 }
    169 
    170 } // xcb
    171 } // lnx
    172 } // tcu
    173