ui/motif/graphics.c

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2015 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 <X11/Intrinsic.h>
#include <X11/IntrinsicP.h>

#include "graphics.h"

#include "container.h"

UIWIDGET ui_drawingarea_create(UiObject *obj, UiDrawingAreaArgs *args) {
    Arg xargs[16];
    int n = 0;
    
    UiContainerPrivate *ctn = ui_obj_container(obj);
    UiLayout layout = UI_ARGS2LAYOUT(args);
    
    Widget parent = ui_container_prepare(ctn, &layout, xargs, &n);
    char *name = args->name ? (char*)args->name : "drawingarea";
    
    Widget widget = XmCreateDrawingArea(parent, name, xargs, n);
    XtManageChild(widget);
    ui_container_add(ctn, widget);
    
    UiDrawingArea *drawingarea = malloc(sizeof(UiDrawingArea));
    drawingarea->obj = obj;
    drawingarea->draw = args->draw;
    drawingarea->drawdata = args->drawdata;
    drawingarea->onclick = args->onclick;
    drawingarea->onclickdata = args->onclickdata;
    drawingarea->onmotion = args->onmotion;
    drawingarea->onmotiondata = args->onmotiondata;
    drawingarea->gc = NULL;
    
    XtAddCallback(
                widget,
                XmNdestroyCallback,
                (XtCallbackProc)ui_drawingarea_destroy,
                drawingarea);
    XtAddCallback(
                widget,
                XmNexposeCallback,
                (XtCallbackProc)ui_drawingarea_expose,
                drawingarea);
    
    return widget;
}

void ui_drawingarea_destroy(Widget w, UiDrawingArea *drawingarea, XtPointer d) {
    if(drawingarea->gc) {
        XFreeGC(XtDisplay(w), drawingarea->gc);
    }
    free(drawingarea);
}

void ui_drawingarea_expose(Widget w, UiDrawingArea *drawingarea, XtPointer d) {
    Display *dp = XtDisplay(w);
    
    if(!drawingarea->gc) {
        XGCValues gcvals;
        gcvals.foreground = BlackPixelOfScreen(XtScreen(w));
        drawingarea->gc = XCreateGC(dp, XtWindow(w), (GCForeground), &gcvals);
    }
    
    if(drawingarea->draw) {
        UiEvent event;
        event.obj = drawingarea->obj;
        event.window = event.obj->window;
        event.document = event.obj->ctx->document;
        event.eventdata = NULL;
        event.eventdatatype = 0;
        event.intval = 0;
        event.set = 0;
        
        UiXlibGraphics g;
        g.g.width = w->core.width;
        g.g.height = w->core.height;
        g.widget = w;
        g.display = dp;
        g.colormap = w->core.colormap;
        g.gc = drawingarea->gc;
        
        drawingarea->draw(&event, (UiGraphics*)&g, drawingarea->drawdata);
    }
}

void ui_drawingarea_getsize(UIWIDGET drawingarea, int *width, int *height) {
    
}

void ui_drawingarea_redraw(UIWIDGET drawingarea) {
    
}