/* Redraw the screen from the backing pixmap */
static gboolean expose_event (GtkWidget *widget,
GdkEventExpose *event)
{
static GdkImage *image = NULL;
GdkCursor *cursor;
GdkPixbuf *pixbuf;
if (framebuffer_allocated == FALSE) {
rfbClientSetClientData (cl, gtk_init, widget);
image = gdk_drawable_get_image (widget->window, 0, 0,
widget->allocation.width,
widget->allocation.height);
cl->frameBuffer= image->mem;
cl->width = widget->allocation.width;
cl->height = widget->allocation.height;
cl->format.bitsPerPixel = image->bits_per_pixel;
cl->format.redShift = image->visual->red_shift;
cl->format.greenShift = image->visual->green_shift;
cl->format.blueShift = image->visual->blue_shift;
cl->format.redMax = (1 << image->visual->red_prec) - 1;
cl->format.greenMax = (1 << image->visual->green_prec) - 1;
cl->format.blueMax = (1 << image->visual->blue_prec) - 1;
#ifdef LIBVNCSERVER_CONFIG_LIBVA
/* Allow libvncclient to use a more efficient way
* of putting the framebuffer on the screen when
* using the H.264 format.
*/
cl->outputWindow = GDK_WINDOW_XID(widget->window);
#endif
SetFormatAndEncodings (cl);
framebuffer_allocated = TRUE;
/* Also disable local cursor */
pixbuf = gdk_pixbuf_new_from_xpm_data(dot_cursor_xpm);
cursor = gdk_cursor_new_from_pixbuf(gdk_display_get_default(), pixbuf, dot_cursor_x_hot, dot_cursor_y_hot);
g_object_unref(pixbuf);
gdk_window_set_cursor (gtk_widget_get_window(GTK_WIDGET(window)), cursor);
gdk_cursor_unref(cursor);
}
#ifndef LIBVNCSERVER_CONFIG_LIBVA
gdk_draw_image (GDK_DRAWABLE (widget->window),
widget->style->fg_gc[gtk_widget_get_state(widget)],
image,
event->area.x, event->area.y,
event->area.x, event->area.y,
event->area.width, event->area.height);
#endif
return FALSE;
}
static VALUE
rg_get_image(VALUE self, VALUE x, VALUE y, VALUE w, VALUE h)
{
return GOBJ2RVAL(gdk_drawable_get_image(_SELF(self),
NUM2INT(x), NUM2INT(y),
NUM2INT(w), NUM2INT(h)));
}
static void
draw_light_marker (gint xpos,
gint ypos)
{
GdkColor color;
color.red = 0x0;
color.green = 0x0;
color.blue = 0x0;
gdk_gc_set_rgb_bg_color (gc, &color);
color.red = 0x0;
color.green = 0x4000;
color.blue = 0xFFFF;
gdk_gc_set_rgb_fg_color (gc, &color);
gdk_gc_set_function (gc, GDK_COPY);
if (mapvals.lightsource.type == POINT_LIGHT)
{
lightx = xpos;
lighty = ypos;
/* Save background */
/* =============== */
backbuf.x = lightx - 7;
backbuf.y = lighty - 7;
backbuf.w = 14;
backbuf.h = 14;
/* X doesn't like images that's outside a window, make sure */
/* we get the backbuffer image from within the boundaries */
/* ======================================================== */
if (backbuf.x < 0)
backbuf.x = 0;
else if ((backbuf.x + backbuf.w) > PREVIEW_WIDTH)
backbuf.w = (PREVIEW_WIDTH - backbuf.x);
if (backbuf.y < 0)
backbuf.y = 0;
else if ((backbuf.y + backbuf.h) > PREVIEW_HEIGHT)
backbuf.h = (PREVIEW_WIDTH - backbuf.y);
backbuf.image = gdk_drawable_get_image (previewarea->window,
backbuf.x, backbuf.y,
backbuf.w, backbuf.h);
gdk_draw_arc (previewarea->window, gc,
TRUE,
lightx - 7, lighty - 7, 14, 14,
0, 360 * 64);
}
}
/****************************************************************************
Converts a pixmap/mask sprite to a GdkPixbuf.
This is just a helper function for sprite_get_pixbuf(). Most callers
should use that function instead.
****************************************************************************/
static GdkPixbuf *gdk_pixbuf_new_from_pixmap_sprite(struct sprite *src)
{
GdkPixbuf *dst;
int w, h;
w = src->width;
h = src->height;
/* convert pixmap */
dst = gdk_pixbuf_new(GDK_COLORSPACE_RGB, src->mask != NULL, 8, w, h);
gdk_pixbuf_get_from_drawable(dst, src->pixmap, NULL, 0, 0, 0, 0, w, h);
/* convert mask */
if (src->mask) {
GdkImage *img;
int x, y, rowstride;
guchar *pixels;
img = gdk_drawable_get_image(src->mask, 0, 0, w, h);
pixels = gdk_pixbuf_get_pixels(dst);
rowstride = gdk_pixbuf_get_rowstride(dst);
for (y = 0; y < h; y++) {
for (x = 0; x < w; x++) {
guchar *pixel = pixels + y * rowstride + x * 4 + 3;
if (gdk_image_get_pixel(img, x, y)) {
*pixel = 255;
} else {
*pixel = 0;
}
}
}
g_object_unref(img);
}
return dst;
}
/****************************************************************************
Method returns the bounding box of a sprite. It assumes a rectangular
object/mask. The bounding box contains the border (pixel which have
unset pixel as neighbours) pixel.
****************************************************************************/
void sprite_get_bounding_box(struct sprite * sprite, int *start_x,
int *start_y, int *end_x, int *end_y)
{
GdkImage *mask_image;
GdkBitmap *mask = sprite_get_mask(sprite);
int i, j;
if (!mask) {
*start_x = 0;
*start_y = 0;
*end_x = sprite->width - 1;
*end_y = sprite->height - 1;
return;
}
mask_image
= gdk_drawable_get_image(mask, 0, 0, sprite->width, sprite->height);
/* parses mask image for the first column that contains a visible pixel */
*start_x = -1;
for (i = 0; i < sprite->width && *start_x == -1; i++) {
for (j = 0; j < sprite->height; j++) {
if (gdk_image_get_pixel(mask_image, i, j) != 0) {
*start_x = i;
break;
}
}
}
/* parses mask image for the last column that contains a visible pixel */
*end_x = -1;
for (i = sprite->width - 1; i >= *start_x && *end_x == -1; i--) {
for (j = 0; j < sprite->height; j++) {
if (gdk_image_get_pixel(mask_image, i, j) != 0) {
*end_x = i;
break;
}
}
}
/* parses mask image for the first row that contains a visible pixel */
*start_y = -1;
for (i = 0; i < sprite->height && *start_y == -1; i++) {
for (j = *start_x; j <= *end_x; j++) {
if (gdk_image_get_pixel(mask_image, j, i) != 0) {
*start_y = i;
break;
}
}
}
/* parses mask image for the last row that contains a visible pixel */
*end_y = -1;
for (i = sprite->height - 1; i >= *end_y && *end_y == -1; i--) {
for (j = *start_x; j <= *end_x; j++) {
if (gdk_image_get_pixel(mask_image, j, i) != 0) {
*end_y = i;
break;
}
}
}
g_object_unref(mask_image);
}
static void
draw_handles (void)
{
gdouble dxpos, dypos;
gint startx, starty, pw, ph;
GimpVector3 viewpoint;
GimpVector3 light_position;
gint k = mapvals.light_selected;
gfloat length;
gfloat delta_x = 0.0;
gfloat delta_y = 0.0;
/* calculate handle position */
compute_preview_rectangle (&startx, &starty, &pw, &ph);
switch (mapvals.lightsource[k].type)
{
case NO_LIGHT:
return;
case POINT_LIGHT:
case SPOT_LIGHT:
/* swap z to reverse light position */
viewpoint = mapvals.viewpoint;
viewpoint.z = -viewpoint.z;
light_position = mapvals.lightsource[k].position;
gimp_vector_3d_to_2d (startx, starty, pw, ph, &dxpos, &dypos,
&viewpoint, &light_position);
handle_xpos = (gint) (dxpos + 0.5);
handle_ypos = (gint) (dypos + 0.5);
break;
case DIRECTIONAL_LIGHT:
light_position.x = light_position.y = 0.5;
light_position.z = 0;
viewpoint.z = -viewpoint.z;
gimp_vector_3d_to_2d (startx, starty, pw, ph, &dxpos, &dypos,
&viewpoint, &light_position);
length = PREVIEW_HEIGHT / 4;
delta_x = mapvals.lightsource[k].direction.x * length;
delta_y = mapvals.lightsource[k].direction.y * length;
handle_xpos = dxpos + delta_x;
handle_ypos = dypos + delta_y;
break;
}
gdk_gc_set_function (gc, GDK_COPY);
if (mapvals.lightsource[k].type != NO_LIGHT)
{
GdkColor color;
/* Restore background if it has been saved */
/* ======================================= */
if (backbuf.image != NULL)
{
gdk_gc_set_function (gc, GDK_COPY);
gdk_draw_image (previewarea->window, gc,
backbuf.image, 0, 0, backbuf.x,
backbuf.y, backbuf.w, backbuf.h);
g_object_unref (backbuf.image);
backbuf.image = NULL;
}
/* calculate backbuffer */
switch (mapvals.lightsource[k].type)
{
case POINT_LIGHT:
backbuf.x = handle_xpos - LIGHT_SYMBOL_SIZE / 2;
backbuf.y = handle_ypos - LIGHT_SYMBOL_SIZE / 2;
backbuf.w = LIGHT_SYMBOL_SIZE;
backbuf.h = LIGHT_SYMBOL_SIZE;
break;
case DIRECTIONAL_LIGHT:
if (delta_x <= 0)
backbuf.x = handle_xpos;
else
backbuf.x = startx + pw/2;
if (delta_y <= 0)
backbuf.y = handle_ypos;
else
backbuf.y = starty + ph/2;
backbuf.x -= LIGHT_SYMBOL_SIZE/2;
backbuf.y -= LIGHT_SYMBOL_SIZE/2;
backbuf.w = fabs(delta_x) + LIGHT_SYMBOL_SIZE;
backbuf.h = fabs(delta_y) + LIGHT_SYMBOL_SIZE;
break;
case SPOT_LIGHT:
backbuf.x = handle_xpos - LIGHT_SYMBOL_SIZE / 2;
backbuf.y = handle_ypos - LIGHT_SYMBOL_SIZE / 2;
backbuf.w = LIGHT_SYMBOL_SIZE;
backbuf.h = LIGHT_SYMBOL_SIZE;
break;
case NO_LIGHT:
break;
}
/* Save background */
/* =============== */
if ((backbuf.x >= 0) &&
(backbuf.x <= PREVIEW_WIDTH) &&
(backbuf.y >= 0) && (backbuf.y <= PREVIEW_HEIGHT))
{
/* clip coordinates to preview widget sizes */
if ((backbuf.x + backbuf.w) > PREVIEW_WIDTH)
backbuf.w = (PREVIEW_WIDTH - backbuf.x);
if ((backbuf.y + backbuf.h) > PREVIEW_HEIGHT)
backbuf.h = (PREVIEW_HEIGHT - backbuf.y);
backbuf.image = gdk_drawable_get_image (previewarea->window,
backbuf.x, backbuf.y,
backbuf.w, backbuf.h);
}
color.red = 0x0;
color.green = 0x0;
color.blue = 0x0;
gdk_gc_set_rgb_bg_color (gc, &color);
color.red = 0x0;
color.green = 0x4000;
color.blue = 0xFFFF;
gdk_gc_set_rgb_fg_color (gc, &color);
/* draw circle at light position */
switch (mapvals.lightsource[k].type)
{
case POINT_LIGHT:
case SPOT_LIGHT:
gdk_draw_arc (previewarea->window, gc, TRUE,
handle_xpos - LIGHT_SYMBOL_SIZE / 2,
handle_ypos - LIGHT_SYMBOL_SIZE / 2,
LIGHT_SYMBOL_SIZE,
LIGHT_SYMBOL_SIZE, 0, 360 * 64);
break;
case DIRECTIONAL_LIGHT:
gdk_draw_arc (previewarea->window, gc, TRUE,
handle_xpos - LIGHT_SYMBOL_SIZE / 2,
handle_ypos - LIGHT_SYMBOL_SIZE / 2,
LIGHT_SYMBOL_SIZE,
LIGHT_SYMBOL_SIZE, 0, 360 * 64);
gdk_draw_line (previewarea->window, gc,
handle_xpos, handle_ypos, startx+pw/2 , starty + ph/2);
break;
case NO_LIGHT:
break;
}
}
}
static GdkBitmap *
scale_bitmap (GdkWindow *window, GdkBitmap *bitmap, gdouble scale_x, gdouble scale_y)
{
GdkGC *gc;
GdkVisual *visual = NULL;
GdkImage *image = NULL, *new_image = NULL;
GdkBitmap *new_bitmap = NULL;
gint x, y, width, height, new_width, new_height;
GdkColor color;
if(!bitmap) return NULL;
if(!window) return NULL;
gc = gdk_gc_new(bitmap);
gdk_window_get_size(bitmap, &width, &height);
if(scale_x == 1.0 && scale_y == 1.0){
new_bitmap = gdk_pixmap_new(window, width, height, 1);
color.pixel = 0;
gdk_gc_set_foreground(gc, &color);
gdk_draw_rectangle(new_bitmap, gc, TRUE, 0, 0, width, height);
color.pixel = 1;
gdk_gc_set_foreground(gc, &color);
gdk_draw_pixmap(new_bitmap,
gc,
bitmap,
0, 0,
0, 0,
width, height);
gdk_gc_unref(gc);
return new_bitmap;
}
new_width = roundint(width * scale_x);
new_height = roundint(height * scale_y);
/* make a client side image of the bitmap, and
* scale the data into a another client side image */
visual = gdk_window_get_visual (bitmap);
if(!visual) return NULL;
new_image = gdk_image_new(GDK_IMAGE_FASTEST,visual,new_width,new_height);
if(!new_image) return NULL;
new_bitmap = gdk_pixmap_new(window, new_width, new_height, 1);
image = gdk_drawable_get_image(bitmap,
0, 0,
width, height);
color.pixel = 0;
gdk_gc_set_foreground(gc, &color);
gdk_draw_rectangle(new_bitmap, gc, TRUE, 0, 0, width, height);
color.pixel = 1;
gdk_gc_set_foreground(gc, &color);
for(x = 0; x < new_width; x++){
for(y = 0; y < new_height; y++){
gint px, py;
gulong pixel;
px = MIN(roundint(x / scale_x), width - 1);
py = MIN(roundint(y / scale_y), height - 1);
pixel = gdk_image_get_pixel(image, px, py);
gdk_image_put_pixel(new_image, x, y, pixel);
}
}
/* draw the image into a new pixmap */
gdk_draw_image(new_bitmap,gc,new_image,0,0,0,0,new_width,new_height);
gdk_image_destroy(image);
gdk_image_destroy(new_image);
gdk_gc_unref(gc);
return new_bitmap;
}