ui/gtk/toolkit.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2014 Olaf Wintermann. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *   1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *
 *   2. Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
 *      documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>

#include "toolkit.h"
#include "toolbar.h"
#include "model.h"
#include "image.h"
#include "../common/document.h"
#include "../common/properties.h"

#include <pthread.h>

static char *application_name;

static ui_callback   appclose_fnc;
static void          *appclose_udata;

static UiObject      *active_window;

void ui_init(char *appname, int argc, char **argv) {
    gtk_init(&argc, &argv);
    application_name = appname;
    
    uic_docmgr_init();
    ui_toolbar_init();
    
    // init custom types
    ui_list_init();
    
    ui_image_init();
    
    uic_load_app_properties();
}

char* ui_appname() {
    return application_name;
}

void ui_exitfunc(ui_callback f, void *userdata) {
    appclose_fnc = f;
    appclose_udata = userdata;
}

void ui_openfilefunc(ui_callback f, void *userdata) {
    // OS X only
}

void ui_main() {
    gtk_main();
    if(appclose_fnc) {
        appclose_fnc(NULL, appclose_udata);
    }
    uic_store_app_properties();
}

void ui_show(UiObject *obj) {
    uic_check_group_widgets(obj->ctx);
    gtk_widget_show_all(obj->widget);
}

void ui_close(UiObject *obj) {
    gtk_widget_destroy(obj->widget);
}


static gboolean ui_job_finished(void *data) {
    UiJob *job = data;
    
    UiEvent event;
    event.obj = job->obj;
    event.window = job->obj->window;
    event.document = job->obj->ctx->document;
    event.intval = 0;
    event.eventdata = NULL;

    job->finish_callback(&event, job->finish_data);
    free(job);
    return FALSE;
}

static void* ui_jobthread(void *data) {
    UiJob *job = data;
    int result = job->job_func(job->job_data);
    if(!result) {
        g_idle_add(ui_job_finished, job);
    }
}

void ui_job(UiObject *obj, ui_threadfunc tf, void *td, ui_callback f, void *fd) {
    UiJob *job = malloc(sizeof(UiJob));
    job->obj = obj;
    job->job_func = tf;
    job->job_data = td;
    job->finish_callback = f;
    job->finish_data = fd;
    pthread_t pid;
    pthread_create(&pid, NULL, ui_jobthread, job);
}

void ui_set_enabled(UIWIDGET widget, int enabled) {
    gtk_widget_set_sensitive(widget, enabled);
}

void ui_set_show_all(UIWIDGET widget, int value) {
    gtk_widget_set_no_show_all(widget, !value);
}

void ui_set_visible(UIWIDGET widget, int visible) {
    if(visible) {
        gtk_widget_set_no_show_all(widget, FALSE);
        gtk_widget_show_all(widget);
    } else {
        gtk_widget_hide(widget);
    }
}

void ui_clipboard_set(char *str) {
    GtkClipboard *cb = gtk_clipboard_get(GDK_SELECTION_CLIPBOARD);
    gtk_clipboard_set_text(cb, str, strlen(str));
}

char* ui_clipboard_get() {
    GtkClipboard *cb = gtk_clipboard_get(GDK_SELECTION_CLIPBOARD);
    char *str = gtk_clipboard_wait_for_text(cb);
    if(str) {
        char *copy = strdup(str);
        g_free(str);
        return copy;
    } else {
        return NULL;
    }
}

void ui_destroy_userdata(GtkWidget *object, void *userdata) {
    free(userdata);
}

void ui_set_active_window(UiObject *obj) {
    active_window = obj;
}

UiObject *ui_get_active_window() {
    return active_window;
}


/* -------------------- common widget functions -------------------- */

static gboolean widget_button_pressed(
        GtkWidget *widget,
        GdkEvent *event,
        gpointer userdata)
{
    UiEventData *eventdata = userdata;
    
    UiMouseEvent me;
    me.x = (int)event->button.x;
    me.y = (int)event->button.y;
    
    int exec = 0;
    if(event->button.type == GDK_BUTTON_PRESS) {
        exec = 1;
        me.type = UI_PRESS;
    } else if(event->button.type == GDK_2BUTTON_PRESS) {
        exec = 1;
        me.type = UI_PRESS2;
    }
    
    if(exec) {
        UiEvent e;
        e.obj = eventdata->obj;
        e.window = eventdata->obj->window;
        e.document = eventdata->obj->ctx->document;
        e.eventdata = &me;
        e.intval = 0;
        eventdata->callback(&e, eventdata->userdata);
    }
    return true;
}

void ui_mouse_handler(UiObject *obj, UIWIDGET widget, ui_callback f, void *u) {
    gtk_widget_set_events(widget, GDK_BUTTON_PRESS_MASK);
    if(f) {
        UiEventData *event = malloc(sizeof(UiEventData));
        event->obj = obj;
        event->callback = f;
        event->userdata = u;
        
        g_signal_connect(G_OBJECT(widget),
                "button-press-event",
                G_CALLBACK(widget_button_pressed),
                event);
    } else {
         // TODO: warning
    }
}