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lxdream.org :: lxdream/src/display.c
lxdream 0.9.1
released Jun 29
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filename src/display.c
changeset 849:bbe26d798fc2
prev839:51f1c4195790
next1010:a506a2f66180
author nkeynes
date Thu Oct 30 23:56:59 2008 +0000 (15 years ago)
permissions -rw-r--r--
last change Add --enable-profiled configure option for convenience (and enable fastcall only on fully optimized builds)
file annotate diff log raw
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/**
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 * $Id$
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 *
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 * Generic support for keyboard and other input sources. The active display
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 * driver is expected to deliver events here, where they're translated and
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 * passed to the appropriate dreamcast controllers (if any).
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 *
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 * Copyright (c) 2005 Nathan Keynes.
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; either version 2 of the License, or
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 * (at your option) any later version.
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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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 */
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#include <stdint.h>
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#include <assert.h>
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#include "dream.h"
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#include "display.h"
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#include "pvr2/pvr2.h"
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display_driver_t display_driver_list[] = {
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#ifdef HAVE_GTK
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        &display_gtk_driver,
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#else
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#ifdef HAVE_COCOA
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        &display_osx_driver,
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#endif
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#endif					   
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        &display_null_driver,
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        NULL };
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/* Some explanation:
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 *   The system has at least one "root" device representing the main display 
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 * (which may be the null display). This device is part of the display_driver
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 * and generates events with no input_driver. The root device has no id
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 * as such (for the purposes of event names)
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 *
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 *   The system may also have one or more auxilliary devices which each have
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 * an input_driver and an id (eg "JS0"). So the keysym "Return" is (de)coded by
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 * the root device, and the keysym "JS0: Button0" is (de)coded by the JS0 input
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 * device as "Button0".
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 *
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 *   For the moment, mice are handled specially, as they behave a little
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 * differently from other devices (although this will probably change in the 
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 * future.
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 */
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typedef struct keymap_entry {
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    input_key_callback_t callback;
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    void *data;
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    uint32_t value;
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    struct keymap_entry *next; // allow chaining
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} *keymap_entry_t;
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typedef struct mouse_entry {
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    gboolean relative;
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    input_mouse_callback_t callback;
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    void *data;
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    struct mouse_entry *next;
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} *mouse_entry_t;
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typedef struct input_driver_entry {
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    input_driver_t driver;
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    uint16_t entry_count;
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    struct keymap_entry *keymap[0];
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} *input_driver_entry_t;
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/**
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 * Colour format information
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 */
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struct colour_format colour_formats[] = {
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        { GL_UNSIGNED_SHORT_1_5_5_5_REV, GL_BGRA, GL_RGB5_A1, 2 },
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        { GL_UNSIGNED_SHORT_5_6_5, GL_RGB, GL_RGB5, 2 },
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        { GL_UNSIGNED_SHORT_4_4_4_4_REV, GL_BGRA, GL_RGBA4, 2 },
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        { GL_UNSIGNED_BYTE, GL_BGRA, GL_RGBA8, 4 }, /* YUV decoded to ARGB8888 */
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        { GL_UNSIGNED_BYTE, GL_BGR, GL_RGB, 3 },
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        { GL_UNSIGNED_BYTE, GL_BGRA, GL_RGBA8, 4 },
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        { GL_UNSIGNED_BYTE, GL_BGRA, GL_RGBA8, 4 }, /* Index4 decoded */
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        { GL_UNSIGNED_BYTE, GL_BGRA, GL_RGBA8, 4 }, /* Index8 decoded */
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        { GL_UNSIGNED_BYTE, GL_BGRA, GL_RGBA8, 4 },
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        { GL_UNSIGNED_BYTE, GL_RGB, GL_RGB, 3 },
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};
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/**
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 * FIXME: make this more memory efficient
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 */
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static struct keymap_entry *root_keymap[65535];
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static struct keymap_entry *keyhooks = NULL;
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static gboolean display_focused = TRUE;
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static GList *input_drivers= NULL;
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static display_keysym_callback_t display_keysym_hook = NULL;
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void *display_keysym_hook_data;
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gboolean input_register_device( input_driver_t driver, uint16_t max_keycode )
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{
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    GList *ptr;
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    for( ptr = input_drivers; ptr != NULL; ptr = g_list_next(ptr) ) {
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        input_driver_entry_t entry = (input_driver_entry_t)ptr->data;
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        if( strcasecmp( entry->driver->id, driver->id ) == 0 ) {
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            return FALSE;
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        }
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    }
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    input_driver_entry_t entry = g_malloc0( sizeof(struct input_driver_entry) + (sizeof(keymap_entry_t) * max_keycode) );
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    entry->driver = driver;
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    entry->entry_count = max_keycode;
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    input_drivers = g_list_append( input_drivers, entry );
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    return TRUE;
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}
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gboolean input_has_device( const gchar *id )
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{
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    GList *ptr;
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    for( ptr = input_drivers; ptr != NULL; ptr = g_list_next(ptr) ) {
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        input_driver_entry_t entry = (input_driver_entry_t)ptr->data;
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        if( strcasecmp(entry->driver->id, id) == 0 ) {
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            return TRUE;
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        }
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    }
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    return FALSE;
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}
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void input_unregister_device( input_driver_t driver )
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{
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    GList *ptr;
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    for( ptr = input_drivers; ptr != NULL; ptr = g_list_next(ptr) ) {
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        input_driver_entry_t entry = (input_driver_entry_t)ptr->data;
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        if( entry->driver == driver ) {
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            if( driver->destroy != NULL ) {
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                driver->destroy(driver);
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            }
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            input_drivers = g_list_remove(input_drivers, (gpointer)entry);
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            g_free( entry );
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            return;
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        }
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    }
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}
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/**
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 * Resolve the keysym and return a pointer to the keymap entry pointer
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 * @return keymap pointer or NULL if the key was unresolved
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 */
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static struct keymap_entry **input_entry_from_keysym( const gchar *keysym )
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{
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    if( keysym == NULL || keysym[0] == 0 ) {
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        return NULL;
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    }
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    char **strv = g_strsplit(keysym,":",2);
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    if( strv[1] == NULL ) {
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        /* root device */
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        if( display_driver == NULL || display_driver->resolve_keysym == NULL) {
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            // Root device has no input handling
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            g_strfreev(strv);
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            return NULL;
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        }
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        uint16_t keycode = display_driver->resolve_keysym(g_strstrip(strv[0]));
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        g_strfreev(strv);
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        if( keycode == 0 ) {
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            return NULL;
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        }
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        return &root_keymap[keycode-1];
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    } else {
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        char *id = g_strstrip(strv[0]);
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        GList *ptr;
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        for( ptr = input_drivers; ptr != NULL; ptr = g_list_next(ptr) ) {
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            input_driver_entry_t entry = (input_driver_entry_t)ptr->data;
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            if( strcasecmp( entry->driver->id, id ) == 0 ) {
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                /* we have ze device */
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                if( entry->driver->resolve_keysym == NULL ) {
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                    g_strfreev(strv);
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                    return NULL;
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                } 
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                uint16_t keycode = entry->driver->resolve_keysym(entry->driver, g_strstrip(strv[1]));
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                g_strfreev(strv);
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                if( keycode == 0 || keycode > entry->entry_count ) {
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                    return NULL;
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                }
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                return &entry->keymap[keycode-1];
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            }
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        }
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        g_strfreev(strv);
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        return NULL; // device not found
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    }
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}
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static struct keymap_entry **input_entry_from_keycode( input_driver_t driver, uint16_t keycode )
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{
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    GList *ptr;
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    if( keycode == 0 ) {
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        return NULL;
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    }
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    if( driver == NULL ) {
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        return &root_keymap[keycode-1];
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    }
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    for( ptr = input_drivers; ptr != NULL; ptr = g_list_next(ptr) ) {
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        input_driver_entry_t entry = (input_driver_entry_t)ptr->data;
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        if( entry->driver == driver ) {
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            if( keycode > entry->entry_count ) {
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                return NULL;
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            } else {
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                return &entry->keymap[keycode-1];
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            }
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        }
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    }
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    return NULL;
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}
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gchar *input_keycode_to_keysym( input_driver_t driver, uint16_t keycode )
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{
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    if( keycode == 0 ) {
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        return NULL;
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    }
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    if( driver == NULL ) {
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        if( display_driver != NULL && display_driver->get_keysym_for_keycode != NULL ) {
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            return display_driver->get_keysym_for_keycode(keycode);
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        }
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    } else if( driver->get_keysym_for_keycode ) {
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        gchar *sym = driver->get_keysym_for_keycode(driver,keycode);
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        if( sym != NULL ) {
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            gchar *result = g_strdup_printf( "%s: %s", driver->id, sym );
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            g_free(sym);
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            return result;
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        }
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    }
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    return NULL;
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}
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gboolean input_register_key( const gchar *keysym, input_key_callback_t callback,
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                             void *data, uint32_t value )
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{
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    if( keysym == NULL ) {
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        return FALSE;
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    }
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    int keys = 0;
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    gchar **strv = g_strsplit(keysym, ",", 16);
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    gchar **s = strv;
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    while( *s != NULL ) {
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        keymap_entry_t *entryp = input_entry_from_keysym(*s);
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        if( entryp != NULL ) {
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            *entryp = g_malloc0(sizeof(struct keymap_entry));
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            (*entryp)->callback = callback;
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            (*entryp)->data = data;
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            (*entryp)->value = value;
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            keys++;
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        }
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        s++;
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   261
    }
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   262
    g_strfreev(strv);
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    return keys != 0;
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   264
}
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void input_unregister_key( const gchar *keysym, input_key_callback_t callback,
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                           void *data, uint32_t value )
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{
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    if( keysym == NULL ) {
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        return;
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   271
    }
nkeynes@614
   272
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   273
    gchar **strv = g_strsplit(keysym, ",", 16);
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    gchar **s = strv;
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    while( *s != NULL ) {
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        keymap_entry_t *entryp = input_entry_from_keysym(*s);
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        if( entryp != NULL && *entryp != NULL && (*entryp)->callback == callback &&
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                (*entryp)->data == data && (*entryp)->value == value ) {
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            g_free( *entryp );
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            *entryp = NULL;
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   281
        }
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   282
        s++;
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    }
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    g_strfreev(strv);
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   285
}
nkeynes@608
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   287
gboolean input_register_keyboard_hook( input_key_callback_t callback,
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                              void *data )
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   289
{
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   290
    keymap_entry_t key = malloc( sizeof( struct keymap_entry ) );
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    assert( key != NULL );
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    key->callback = callback;
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    key->data = data;
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   294
    key->next = keyhooks;
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   295
    keyhooks = key;
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   296
    return TRUE;
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   297
}
nkeynes@608
   298
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   299
void input_unregister_keyboard_hook( input_key_callback_t callback,
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   300
                            void *data )
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   301
{
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   302
    keymap_entry_t key = keyhooks;
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   303
    if( key != NULL ) {
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   304
        if( key->callback == callback && key->data == data ) {
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   305
            keyhooks = keyhooks->next;
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   306
            free(key);
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   307
            return;
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   308
        }
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   309
        while( key->next != NULL ) {
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   310
            if( key->next->callback == callback && key->next->data == data ) {
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   311
                keymap_entry_t next = key->next;
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   312
                key->next = next->next;
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   313
                free(next);
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   314
                return;
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   315
            }
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   316
            key = key->next;
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   317
        }
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   318
    }
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   319
}
nkeynes@608
   320
nkeynes@849
   321
gboolean input_is_key_valid( const gchar *keysym )
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   322
{
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   323
    keymap_entry_t *ptr = input_entry_from_keysym(keysym);
nkeynes@849
   324
    return ptr != NULL;
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   325
}
nkeynes@849
   326
nkeynes@849
   327
gboolean input_is_key_registered( const gchar *keysym )
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   328
{
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   329
    keymap_entry_t *ptr = input_entry_from_keysym(keysym);
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   330
    return ptr != NULL && *ptr != NULL;
nkeynes@849
   331
}
nkeynes@849
   332
nkeynes@849
   333
void input_event_keydown( input_driver_t driver, uint16_t keycode, uint32_t pressure )
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   334
{
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   335
    if( display_focused ) {
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   336
        keymap_entry_t *entryp = input_entry_from_keycode(driver,keycode);
nkeynes@849
   337
        if( entryp != NULL && *entryp != NULL ) {
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   338
            (*entryp)->callback( (*entryp)->data, (*entryp)->value, pressure, TRUE );
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   339
        }
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   340
        if( driver == NULL ) {
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   341
            keymap_entry_t key = keyhooks;
nkeynes@849
   342
            while( key != NULL ) {
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   343
                key->callback( key->data, keycode, pressure, TRUE );
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   344
                key = key->next;
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   345
            }
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   346
        }
nkeynes@849
   347
    }
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   348
    if( display_keysym_hook != NULL ) {
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   349
        gchar *sym = input_keycode_to_keysym( driver, keycode );
nkeynes@849
   350
        if( sym != NULL ) {
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   351
            display_keysym_hook(display_keysym_hook_data, sym);
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   352
            g_free(sym);
nkeynes@849
   353
        }
nkeynes@849
   354
    }
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   355
}
nkeynes@849
   356
nkeynes@849
   357
void input_event_keyup( input_driver_t driver, uint16_t keycode, uint32_t pressure )
nkeynes@849
   358
{
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   359
    if( display_focused ) {
nkeynes@849
   360
        keymap_entry_t *entryp = input_entry_from_keycode(driver,keycode);
nkeynes@849
   361
        if( entryp != NULL && *entryp != NULL ) {
nkeynes@849
   362
            (*entryp)->callback( (*entryp)->data, (*entryp)->value, pressure, FALSE );
nkeynes@849
   363
        }
nkeynes@849
   364
nkeynes@849
   365
        if( driver == NULL ) {
nkeynes@849
   366
            keymap_entry_t key = keyhooks;
nkeynes@849
   367
            while( key != NULL ) {
nkeynes@849
   368
                key->callback( key->data, keycode, pressure, FALSE );
nkeynes@849
   369
                key = key->next;
nkeynes@849
   370
            }
nkeynes@849
   371
        }
nkeynes@849
   372
    }
nkeynes@849
   373
}
nkeynes@849
   374
nkeynes@849
   375
uint16_t input_keycode_to_dckeysym( uint16_t keycode )
nkeynes@849
   376
{
nkeynes@849
   377
    return display_driver->convert_to_dckeysym(keycode);
nkeynes@849
   378
}
nkeynes@849
   379
nkeynes@849
   380
void input_set_keysym_hook( display_keysym_callback_t hook, void *data )
nkeynes@849
   381
{
nkeynes@849
   382
    display_keysym_hook = hook;
nkeynes@849
   383
    display_keysym_hook_data = data;
nkeynes@849
   384
}
nkeynes@849
   385
nkeynes@849
   386
/***************** System mouse driver ****************/
nkeynes@849
   387
nkeynes@849
   388
static struct keymap_entry *mouse_keymap[MAX_MOUSE_BUTTONS];
nkeynes@849
   389
static struct mouse_entry *mousehooks = NULL;
nkeynes@849
   390
static uint32_t mouse_x = -1, mouse_y = -1, mouse_buttons = 0;
nkeynes@849
   391
nkeynes@849
   392
uint16_t mouse_resolve_keysym( struct input_driver *driver, const gchar *keysym )
nkeynes@849
   393
{
nkeynes@849
   394
    if( strncasecmp( keysym, "Button", 6 ) == 0 ){
nkeynes@849
   395
        unsigned long button = strtoul( keysym+6, NULL, 10 );
nkeynes@849
   396
        if( button > MAX_MOUSE_BUTTONS ) {
nkeynes@849
   397
            return 0;
nkeynes@849
   398
        }
nkeynes@849
   399
        return (uint16_t)button;
nkeynes@849
   400
    }
nkeynes@849
   401
    return 0;
nkeynes@849
   402
}
nkeynes@849
   403
nkeynes@849
   404
gchar *mouse_get_keysym( struct input_driver *driver, uint16_t keycode )
nkeynes@849
   405
{
nkeynes@849
   406
    return g_strdup_printf( "Button%d", (keycode) );
nkeynes@849
   407
}
nkeynes@849
   408
nkeynes@849
   409
struct input_driver system_mouse_driver = { "Mouse", mouse_resolve_keysym, NULL, mouse_get_keysym, NULL };
nkeynes@849
   410
nkeynes@849
   411
nkeynes@608
   412
gboolean input_register_mouse_hook( gboolean relative, input_mouse_callback_t callback,
nkeynes@736
   413
                                    void *data )
nkeynes@608
   414
{
nkeynes@608
   415
    mouse_entry_t ent = malloc( sizeof( struct mouse_entry ) );
nkeynes@608
   416
    assert( ent != NULL );
nkeynes@608
   417
    ent->callback = callback;
nkeynes@608
   418
    ent->data = data;
nkeynes@608
   419
    ent->next = mousehooks;
nkeynes@608
   420
    mousehooks = ent;
nkeynes@608
   421
    return TRUE;
nkeynes@608
   422
}    
nkeynes@608
   423
nkeynes@608
   424
void input_unregister_mouse_hook( input_mouse_callback_t callback, void *data )
nkeynes@608
   425
{
nkeynes@608
   426
    mouse_entry_t ent = mousehooks;
nkeynes@608
   427
    if( ent != NULL ) {
nkeynes@736
   428
        if( ent->callback == callback && ent->data == data ) {
nkeynes@736
   429
            mousehooks = mousehooks->next;
nkeynes@736
   430
            free(ent);
nkeynes@736
   431
            return;
nkeynes@736
   432
        }
nkeynes@736
   433
        while( ent->next != NULL ) {
nkeynes@736
   434
            if( ent->next->callback == callback && ent->next->data == data ) {
nkeynes@627
   435
                mouse_entry_t next = ent->next;
nkeynes@736
   436
                ent->next = next->next;
nkeynes@736
   437
                free(next);
nkeynes@736
   438
                return;
nkeynes@736
   439
            }
nkeynes@736
   440
            ent = ent->next;
nkeynes@736
   441
        }
nkeynes@608
   442
    }
nkeynes@608
   443
}
nkeynes@608
   444
nkeynes@849
   445
void input_event_run_mouse_hooks( uint32_t buttons, int32_t x, int32_t y, gboolean absolute )
nkeynes@608
   446
{
nkeynes@608
   447
    mouse_entry_t ent = mousehooks;
nkeynes@608
   448
    while( ent != NULL ) {
nkeynes@839
   449
        ent->callback(ent->data, buttons, x, y, absolute);
nkeynes@736
   450
        ent = ent->next;
nkeynes@608
   451
    }
nkeynes@608
   452
}
nkeynes@144
   453
nkeynes@849
   454
void input_event_mousedown( uint16_t button, int32_t x, int32_t y, gboolean absolute )
nkeynes@144
   455
{
nkeynes@849
   456
    if( absolute ) {
nkeynes@849
   457
        mouse_x = x;
nkeynes@849
   458
        mouse_y = y;
nkeynes@849
   459
    }
nkeynes@849
   460
    mouse_buttons |= (1<<button);
nkeynes@849
   461
    input_event_keydown( &system_mouse_driver, button+1, 1 );
nkeynes@849
   462
    input_event_run_mouse_hooks( mouse_buttons, x, y, absolute );
nkeynes@849
   463
}    
nkeynes@849
   464
nkeynes@849
   465
void input_event_mouseup( uint16_t button, int32_t x, int32_t y, gboolean absolute )
nkeynes@849
   466
{
nkeynes@849
   467
    if( absolute ) {
nkeynes@849
   468
        mouse_x = x;
nkeynes@849
   469
        mouse_y = y;
nkeynes@849
   470
    }
nkeynes@849
   471
    mouse_buttons &= ~(1<<button);
nkeynes@849
   472
    input_event_keyup( &system_mouse_driver, button+1, 1 );
nkeynes@849
   473
    input_event_run_mouse_hooks( mouse_buttons, x, y, absolute );
nkeynes@144
   474
}
nkeynes@144
   475
nkeynes@849
   476
void input_event_mousemove( int32_t x, int32_t y, gboolean absolute )
nkeynes@144
   477
{
nkeynes@849
   478
    if( absolute ) {
nkeynes@849
   479
        mouse_x = x;
nkeynes@849
   480
        mouse_y = y;
nkeynes@849
   481
    }
nkeynes@849
   482
    input_event_run_mouse_hooks( mouse_buttons, x, y, absolute );
nkeynes@144
   483
}
nkeynes@144
   484
nkeynes@849
   485
/************************ Main display driver *************************/
nkeynes@144
   486
nkeynes@700
   487
void print_display_drivers( FILE *out )
nkeynes@700
   488
{
nkeynes@700
   489
    int i;
nkeynes@700
   490
    fprintf( out, "Available video drivers:\n" );
nkeynes@700
   491
    for( i=0; display_driver_list[i] != NULL; i++ ) {
nkeynes@700
   492
        fprintf( out, "  %-8s %s\n", display_driver_list[i]->name,
nkeynes@736
   493
                gettext(display_driver_list[i]->description) );
nkeynes@700
   494
    }
nkeynes@700
   495
}
nkeynes@700
   496
nkeynes@531
   497
display_driver_t get_display_driver_by_name( const char *name )
nkeynes@531
   498
{
nkeynes@531
   499
    int i;
nkeynes@531
   500
    if( name == NULL ) {
nkeynes@736
   501
        return display_driver_list[0];
nkeynes@531
   502
    }
nkeynes@531
   503
    for( i=0; display_driver_list[i] != NULL; i++ ) {
nkeynes@736
   504
        if( strcasecmp( display_driver_list[i]->name, name ) == 0 ) {
nkeynes@736
   505
            return display_driver_list[i];
nkeynes@736
   506
        }
nkeynes@531
   507
    }
nkeynes@531
   508
nkeynes@531
   509
    return NULL;
nkeynes@531
   510
}
nkeynes@144
   511
nkeynes@144
   512
nkeynes@370
   513
gboolean display_set_driver( display_driver_t driver )
nkeynes@144
   514
{
nkeynes@370
   515
    gboolean rv = TRUE;
nkeynes@370
   516
    if( display_driver != NULL && display_driver->shutdown_driver != NULL ) 
nkeynes@736
   517
        display_driver->shutdown_driver();
nkeynes@144
   518
nkeynes@144
   519
    display_driver = driver;
nkeynes@144
   520
    if( driver->init_driver != NULL )
nkeynes@736
   521
        rv = driver->init_driver();
nkeynes@849
   522
    if( rv ) {
nkeynes@849
   523
        input_register_device(&system_mouse_driver, MAX_MOUSE_BUTTONS);
nkeynes@849
   524
    } else {
nkeynes@736
   525
        display_driver = NULL;
nkeynes@370
   526
    }
nkeynes@370
   527
    return rv;
nkeynes@144
   528
}
nkeynes@614
   529
nkeynes@614
   530
void display_set_focused( gboolean has_focus )
nkeynes@614
   531
{
nkeynes@614
   532
    display_focused = has_focus;
nkeynes@614
   533
}
.