/*
* Copyright (c) 2021 Jiri Svoboda
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - 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.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
/** @addtogroup libui
* @{
*/
/**
* @file Image
*/
#include <errno.h>
#include <gfx/bitmap.h>
#include <gfx/context.h>
#include <gfx/render.h>
#include <gfx/text.h>
#include <stdlib.h>
#include <str.h>
#include <ui/control.h>
#include <ui/paint.h>
#include <ui/image.h>
#include "../private/image.h"
#include "../private/resource.h"
#include "../private/ui.h"
static void ui_image_ctl_destroy(void *);
static errno_t ui_image_ctl_paint(void *);
static ui_evclaim_t ui_image_ctl_pos_event(void *, pos_event_t *);
/** Image control ops */
ui_control_ops_t ui_image_ops = {
.destroy = ui_image_ctl_destroy,
.paint = ui_image_ctl_paint,
.pos_event = ui_image_ctl_pos_event
};
/** Create new image.
*
* @param resource UI resource
* @param bitmap Bitmap
* @param brect Bitmap rectangle
* @param rimage Place to store pointer to new image
* @return EOK on success, ENOMEM if out of memory
*/
errno_t ui_image_create(ui_resource_t *resource, gfx_bitmap_t *bitmap,
gfx_rect_t *brect, ui_image_t **rimage)
{
ui_image_t *image;
errno_t rc;
image = calloc(1, sizeof(ui_image_t));
if (image == NULL)
return ENOMEM;
rc = ui_control_new(&ui_image_ops, (void *) image, &image->control);
if (rc != EOK) {
free(image);
return rc;
}
image->bitmap = bitmap;
image->brect = *brect;
image->res = resource;
*rimage = image;
return EOK;
}
/** Destroy image.
*
* @param image Image or @c NULL
*/
void ui_image_destroy(ui_image_t *image)
{
if (image == NULL)
return;
ui_control_delete(image->control);
if (image->bitmap != NULL)
gfx_bitmap_destroy(image->bitmap);
free(image);
}
/** Get base control from image.
*
* @param image Image
* @return Control
*/
ui_control_t *ui_image_ctl(ui_image_t *image)
{
return image->control;
}
/** Set image rectangle.
*
* @param image Image
* @param rect New image rectangle
*/
void ui_image_set_rect(ui_image_t *image, gfx_rect_t *rect)
{
image->rect = *rect;
}
/** Set image flags.
*
* @param image Image
* @param flags Flags
*/
void ui_image_set_flags(ui_image_t *image, ui_image_flags_t flags)
{
image->flags = flags;
}
/** Paint image.
*
* @param image Image
* @return EOK on success or an error code
*/
errno_t ui_image_paint(ui_image_t *image)
{
gfx_rect_t irect;
gfx_rect_t srect;
gfx_coord2_t offs;
errno_t rc;
if ((image->flags & ui_imgf_frame) != 0) {
rc = ui_paint_bevel(image->res->gc, &image->rect,
image->res->btn_frame_color, image->res->btn_frame_color,
1, NULL);
if (rc != EOK)
return rc;
}
if (image->bitmap == NULL)
return EOK;
irect = image->rect;
if ((image->flags & ui_imgf_frame) != 0) {
irect.p0.x++;
irect.p0.y++;
irect.p1.x--;
irect.p1.y--;
}
/*
* UI image position does not depend on bitmap rectangle p0, so
* we need to subtract it.
*/
offs.x = irect.p0.x - image->brect.p0.x;
offs.y = irect.p0.y - image->brect.p0.y;
/*
* Translate image rectangle back to bitmap coordinate space.
* Thus the bitmap will be clipped to the image rectangle.
*/
gfx_rect_rtranslate(&offs, &irect, &srect);
rc = gfx_bitmap_render(image->bitmap, &srect, &offs);
if (rc != EOK)
return rc;
return gfx_update(image->res->gc);
}
/** Change image bitmap.
*
* Note that the caller must have saved the pointer to the previous bitmap
* in the image, because this causes it to be unlinked from the image and
* not destroyed (the ownership is transferred back to the caller).
*
* @param image Image
* @param bitmap New bitmap (ownership transferred to image) or @c NULL
* @param brect New bitmap rectangle
*/
void ui_image_set_bmp(ui_image_t *image, gfx_bitmap_t *bitmap,
gfx_rect_t *brect)
{
image->bitmap = bitmap;
image->brect = *brect;
}
/** Destroy image control.
*
* @param arg Argument (ui_image_t *)
*/
void ui_image_ctl_destroy(void *arg)
{
ui_image_t *image = (ui_image_t *) arg;
ui_image_destroy(image);
}
/** Paint image control.
*
* @param arg Argument (ui_image_t *)
* @return EOK on success or an error code
*/
errno_t ui_image_ctl_paint(void *arg)
{
ui_image_t *image = (ui_image_t *) arg;
return ui_image_paint(image);
}
/** Handle image control position event.
*
* @param arg Argument (ui_image_t *)
* @param pos_event Position event
* @return @c ui_claimed iff the event is claimed
*/
ui_evclaim_t ui_image_ctl_pos_event(void *arg, pos_event_t *event)
{
ui_image_t *image = (ui_image_t *) arg;
(void) image;
return ui_unclaimed;
}
/** @}
*/