+++ /dev/null
-/*
- * TinyPTC x11 v0.7.3 X Double Buffer Extension target
- * Copyright (C) 2001-2002 Alessandro Gatti <a.gatti@tiscali.it>
- *
- * http://www.sourceforge.net/projects/tinyptc/
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *
- */
-
-/* #includes */
-
-#include <X11/Xlib.h>
-#include <X11/Xutil.h>
-#include <X11/extensions/Xdbe.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <limits.h>
-#include "tinyptc.h"
-
-#ifdef __PTC_XDBE__
-
-#define __PTC_FROM_SOURCE
-
-#include "xdbe.h"
-
-/* Open the screen */
-
-int
-ptc_open (char *title, int width, int height)
-{
- /* Open a display on the current root window */
- ptc_display = XOpenDisplay (NULL);
- if (ptc_display == NULL)
- {
- return PTC_FAILURE;
- }
- /* Get the default screen associated with the previously opened display */
- ptc_screen = DefaultScreen (ptc_display);
- /* Get screen bitdepth */
- ptc_depth = DefaultDepth (ptc_display, ptc_screen);
- /* Get a pointer to the supported pixmap formats */
- ptc_pixmap_formats =
- XListPixmapFormats (ptc_display, &ptc_pixmap_format_count);
- /* Check if there's one that's suitable */
- for (ptc_pixmap_counter = 0; ptc_pixmap_counter < ptc_pixmap_format_count;
- ptc_pixmap_counter++)
- {
- if (ptc_depth == ptc_pixmap_formats[ptc_pixmap_counter].depth)
- {
- /* Set the right value */
- ptc_converter_depth =
- ptc_pixmap_formats[ptc_pixmap_counter].bits_per_pixel;
- }
- }
- XFree (ptc_pixmap_formats);
-#ifdef __PTC_ENABLE_CONVERSIONS__
- /* Get the default visual */
- ptc_visual = DefaultVisual (ptc_display, ptc_screen);
- /* Check if a converter is avaliable */
- ptc_convert =
- ptc_request_converter (ptc_converter_depth, ptc_visual->red_mask,
- ptc_visual->green_mask, ptc_visual->blue_mask);
- if (!ptc_convert)
- {
- /* Close the display */
- XCloseDisplay (ptc_display);
- return 0;
- }
- /* Get the actual bytes-per-pixel value */
- switch (ptc_converter_depth)
- {
- case 8:
- ptc_output_pitch = 1;
- break;
- case 15:
- ptc_output_pitch = 2;
- break;
- case 16:
- ptc_output_pitch = 2;
- break;
- case 24:
- ptc_output_pitch = 3;
- break;
- case 32:
- ptc_output_pitch = 4;
- break;
- }
- /* Allocate the temporary buffer */
- ptc_buffer = (char *) malloc (width * height * ptc_output_pitch);
- if (ptc_buffer == NULL)
- {
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
-#else
- /* It runs only on a 32bpp display if no conversions were activated */
- if (ptc_converter_depth != 32)
- {
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
-
- /* Check for Xdbe extension */
- if (!XdbeQueryExtension
- (ptc_display, &ptc_dbe_major_version, &ptc_dbe_minor_version))
- {
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
- /* Get Xdbe visual info */
- ptc_dbe_drawables = 0;
- ptc_dbe_visual_infoptr =
- XdbeGetVisualInfo (ptc_display, &ptc_root_window, &ptc_dbe_drawables);
- if (ptc_dbe_visual_infoptr == NULL)
- {
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
- /* Choose the best visual */
- ptc_dbe_best_performance = INT_MIN;
- ptc_dbe_best_visual = 0;
- ptc_dbe_visualptr = ptc_dbe_visual_infoptr->visinfo;
- for (ptc_dbe_counter = 0; ptc_dbe_counter < ptc_dbe_visual_infoptr->count;
- ptc_dbe_counter++)
- {
- if (ptc_dbe_visualptr[ptc_dbe_counter].depth == ptc_depth)
- {
- if (ptc_dbe_visualptr[ptc_dbe_counter].perflevel >
- ptc_dbe_best_performance)
- {
- ptc_dbe_best_performance =
- ptc_dbe_visualptr[ptc_dbe_counter].perflevel;
- ptc_dbe_best_visual = ptc_dbe_visualptr[ptc_dbe_counter].visual;
- }
- }
- }
- /* Deallocate visual info data */
- XdbeFreeVisualInfo (ptc_dbe_visual_infoptr);
- /* No suitable visuals */
- if (ptc_dbe_best_visual == 0)
- {
- XCloseDisplay (ptc_display);
- return PTC_FAILURE;
- }
- /* Get screen dimensions */
- ptc_screen_width = DisplayWidth (ptc_display, ptc_screen);
- ptc_screen_height = DisplayHeight (ptc_display, ptc_screen);
- /* Get the default root window */
- ptc_root_window = DefaultRootWindow (ptc_display);
- /* Initialize window's attribute structure */
- ptc_window_attributes.border_pixel = BlackPixel (ptc_display, ptc_screen);
- ptc_window_attributes.background_pixel =
- BlackPixel (ptc_display, ptc_screen);
- ptc_window_attributes.backing_store = NotUseful;
-#ifdef __PTC_CENTER_WINDOW__
- /* Center the window on the screen */
- ptc_x_position = (ptc_screen_width - width) / 2;
- ptc_y_position = (ptc_screen_height - height) / 2;
-#else
- /* Dock the window on the top-left corner */
- ptc_x_position = 0;
- ptc_y_position = 0;
-#endif /* __PTC_CENTER_WINDOW__ */
- /* Create the window */
- ptc_window =
- XCreateWindow (ptc_display, ptc_root_window, ptc_x_position,
- ptc_y_position, width, height, 0, ptc_depth, InputOutput,
- (Visual *) & ptc_dbe_best_visual,
- CWBackPixel | CWBorderPixel | CWBackingStore,
- &ptc_window_attributes);
- /* Set the window's name */
- XStoreName (ptc_display, ptc_window, title);
- /* Tell the server to report only keypress-related events */
- XSelectInput (ptc_display, ptc_window, KeyPressMask | KeyReleaseMask);
- /* Initialize window's sizehint definition structure */
- ptc_window_sizehints.flags = PPosition | PMinSize | PMaxSize;
- ptc_window_sizehints.x = 0;
- ptc_window_sizehints.y = 0;
- ptc_window_sizehints.min_width = width;
- ptc_window_sizehints.max_width = width;
- ptc_window_sizehints.min_height = height;
- ptc_window_sizehints.max_height = height;
- /* Set the window's sizehint */
- XSetWMNormalHints (ptc_display, ptc_window, &ptc_window_sizehints);
- /* Clear the window */
- XClearWindow (ptc_display, ptc_window);
- /* Put the window on top of the others */
- XMapRaised (ptc_display, ptc_window);
- /* Clear event queue */
- XFlush (ptc_display);
- /* Get the default graphic context */
- ptc_window_gc = DefaultGC (ptc_display, ptc_screen);
- /* Create an XImage */
- ptc_ximage =
- XCreateImage (ptc_display, CopyFromParent, ptc_depth, ZPixmap, 0, NULL,
- width, height, 32, width * 4);
- /* Allocate the back buffers */
- ptc_dbe_backbuffer =
- XdbeAllocateBackBufferName (ptc_display, ptc_window, XdbeBackground);
- ptc_dbe_swapinfo.swap_window = ptc_window;
- ptc_dbe_swapinfo.swap_action = XdbeBackground;
- /* Save windowsize values */
- ptc_viewport_width = width;
- ptc_viewport_height = height;
- return PTC_SUCCESS;
-}
-
-/* Update the screen */
-
-int
-ptc_update (void *buffer)
-{
- char *ptc_buffer;
-
- ptc_buffer=(char *)buffer;
-#ifdef __PTC_ENABLE_CONVERSIONS__
- ptc_ximage->data = ptc_buffer;
- ptc_source_index = 0;
- ptc_destination_index = 0;
- /* Convert the image line by line */
- for (ptc_blitcounter = 0; ptc_blitcounter < ptc_viewport_height;
- ptc_blitcounter++)
- {
- /* Conversion */
- ptc_convert (ptc_buffer + ptc_source_index,
- (ptc_ximage->data) + ptc_destination_index,
- ptc_viewport_width);
- /* Pointers update */
- ptc_source_index += ptc_viewport_width * sizeof (int);
- ptc_destination_index += ptc_viewport_width * ptc_output_pitch;
- }
-#else
- /* Set XImage's data buffer value with the supplied buffer pointer */
- ptc_ximage->data = ptc_buffer;
-#endif /* __PTC_ENABLE_CONVERSIONS__ */
- /* Put the buffer on the back buffer */
- XPutImage (ptc_display, ptc_dbe_backbuffer, ptc_window_gc, ptc_ximage, 0, 0,
- 0, 0, ptc_viewport_width, ptc_viewport_height);
- /* Start the swap operation */
- XdbeBeginIdiom (ptc_display);
- /* Swap */
- XdbeSwapBuffers (ptc_display, &ptc_dbe_swapinfo, 1);
- /* End the swap operation */
- XdbeEndIdiom (ptc_display);
- /* Check for incoming events */
- XFlush (ptc_display);
- /* Process incoming events */
- if (ptc_process_events ())
- {
-#ifdef __PTC_CLEANUP_CALLBACK__
- ptc_cleanup_callback ();
-#endif /* __PTC_CLEANUP_CALLBACK__ */
- ptc_close ();
- exit (0);
- }
- return PTC_SUCCESS;
-}
-
-/* Process events */
-
-int
-ptc_process_events (void)
-{
- XEvent ptc_xevent;
- KeySym ptc_keysym;
- /* Check if there are events waiting in the display's queue */
- if (XPending (ptc_display))
- {
- /* Get the next event in queue */
- XNextEvent (ptc_display, &ptc_xevent);
- /* Check if it's a keypress event */
- if (ptc_xevent.type == KeyPress)
- {
- /* Get the keysym */
- ptc_keysym = XLookupKeysym (&ptc_xevent.xkey, 0);
- /* Check if the key pressed was a function one */
- if ((ptc_keysym >> 8) == __PTC_FUNCTION_KEY__)
- {
- /* Check if it was the escape key */
- if ((ptc_keysym & 0xFF) == __PTC_ESCAPE_KEY__)
- {
- return PTC_SUCCESS;
- }
- }
- }
- }
- return PTC_FAILURE;
-}
-
-/* Close the screen */
-
-void
-ptc_close (void)
-{
- /* Deallocate the back buffer */
- XdbeDeallocateBackBufferName (ptc_display, ptc_dbe_backbuffer);
- /* Restore XImage's buffer pointer */
- ptc_ximage->data = NULL;
- /* Destroy the XImage */
- XDestroyImage (ptc_ximage);
- /* Close the window */
- XDestroyWindow (ptc_display, ptc_window);
- /* Close the display */
- XCloseDisplay (ptc_display);
- /* Deallocate the buffer */
- if (ptc_buffer)
- {
- free (ptc_buffer);
- }
-}
-
-#endif /* __PTC_XDBE__ */
projects / ccbs / blobdiff