void Blitter_32bppSimple::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
{
const SpriteLoader::CommonPixel *src, *src_line;
uint32 *dst, *dst_line;
/* Find where to start reading in the source sprite */
src_line = (const SpriteLoader::CommonPixel *)bp->sprite + (bp->skip_top * bp->sprite_width + bp->skip_left) * ScaleByZoom(1, zoom);
dst_line = (uint32 *)bp->dst + bp->top * bp->pitch + bp->left;
for (int y = 0; y < bp->height; y++) {
dst = dst_line;
dst_line += bp->pitch;
src = src_line;
src_line += bp->sprite_width * ScaleByZoom(1, zoom);
for (int x = 0; x < bp->width; x++) {
switch (mode) {
case BM_COLOUR_REMAP:
/* In case the m-channel is zero, do not remap this pixel in any way */
if (src->m == 0) {
if (src->a != 0) *dst = ComposeColourRGBA(src->r, src->g, src->b, src->a, *dst);
} else {
if (bp->remap[src->m] != 0) *dst = ComposeColourPA(this->LookupColourInPalette(bp->remap[src->m]), src->a, *dst);
}
break;
case BM_TRANSPARENT:
/* TODO -- We make an assumption here that the remap in fact is transparency, not some colour.
* This is never a problem with the code we produce, but newgrfs can make it fail... or at least:
* we produce a result the newgrf maker didn't expect ;) */
/* Make the current colour a bit more black, so it looks like this image is transparent */
if (src->a != 0) *dst = MakeTransparent(*dst, 192);
break;
default:
if (src->a != 0) *dst = ComposeColourRGBA(src->r, src->g, src->b, src->a, *dst);
break;
}
dst++;
src += ScaleByZoom(1, zoom);
}
}
}
BuildConfirmationWindow(WindowDesc *desc) : Window(desc)
{
this->InitNested(0);
Point pt;
const Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
NWidgetViewport *nvp = this->GetWidget<NWidgetViewport>(WID_BC_OK);
pt.x = w->viewport->scrollpos_x + ScaleByZoom(_cursor.pos.x - nvp->current_x / 2, w->viewport->zoom);
pt.y = w->viewport->scrollpos_y + ScaleByZoom(_cursor.pos.y - nvp->current_y / 4, w->viewport->zoom);
nvp->InitializeViewport(this, 0, w->viewport->zoom);
nvp->disp_flags |= ND_SHADE_DIMMED;
this->viewport->scrollpos_x = pt.x;
this->viewport->scrollpos_y = pt.y;
this->viewport->dest_scrollpos_x = this->viewport->scrollpos_x;
this->viewport->dest_scrollpos_y = this->viewport->scrollpos_y;
BuildConfirmationWindow::shown = true;
}
void Blitter_8bppSimple::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
{
const uint8 *src, *src_line;
uint8 *dst, *dst_line;
/* Find where to start reading in the source sprite */
src_line = (const uint8 *)bp->sprite + (bp->skip_top * bp->sprite_width + bp->skip_left) * ScaleByZoom(1, zoom);
dst_line = (uint8 *)bp->dst + bp->top * bp->pitch + bp->left;
for (int y = 0; y < bp->height; y++) {
dst = dst_line;
dst_line += bp->pitch;
src = src_line;
src_line += bp->sprite_width * ScaleByZoom(1, zoom);
for (int x = 0; x < bp->width; x++) {
uint colour = 0;
switch (mode) {
case BM_COLOUR_REMAP:
case BM_CRASH_REMAP:
colour = bp->remap[*src];
break;
case BM_TRANSPARENT:
if (*src != 0) colour = bp->remap[*dst];
break;
default:
colour = *src;
break;
}
if (colour != 0) *dst = colour;
dst++;
src += ScaleByZoom(1, zoom);
}
}
}
void Blitter_8bppDebug::Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom)
{
const uint8 *src, *src_line;
uint8 *dst, *dst_line;
/* Find where to start reading in the source sprite */
src_line = (const uint8 *)bp->sprite + (bp->skip_top * bp->sprite_width + bp->skip_left) * ScaleByZoom(1, zoom);
dst_line = (uint8 *)bp->dst + bp->top * bp->pitch + bp->left;
for (int y = 0; y < bp->height; y++) {
dst = dst_line;
dst_line += bp->pitch;
src = src_line;
src_line += bp->sprite_width * ScaleByZoom(1, zoom);
for (int x = 0; x < bp->width; x++) {
if (*src != 0) *dst = *src;
dst++;
src += ScaleByZoom(1, zoom);
}
assert(src <= src_line);
}
}
void ResetViewportAfterLoadGame()
{
Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
w->viewport->scrollpos_x = _saved_scrollpos_x;
w->viewport->scrollpos_y = _saved_scrollpos_y;
w->viewport->dest_scrollpos_x = _saved_scrollpos_x;
w->viewport->dest_scrollpos_y = _saved_scrollpos_y;
ViewPort *vp = w->viewport;
vp->zoom = (ZoomLevel)min(_saved_scrollpos_zoom, ZOOM_LVL_MAX);
vp->virtual_width = ScaleByZoom(vp->width, vp->zoom);
vp->virtual_height = ScaleByZoom(vp->height, vp->zoom);
/* If zoom_max is ZOOM_LVL_MIN then the setting has not been loaded yet, therefore all levels are allowed. */
if (_settings_client.gui.zoom_max != ZOOM_LVL_MIN) {
/* Ensure zoom level is allowed */
while (vp->zoom < _settings_client.gui.zoom_min) DoZoomInOutWindow(ZOOM_OUT, w);
while (vp->zoom > _settings_client.gui.zoom_max) DoZoomInOutWindow(ZOOM_IN, w);
}
DoZoomInOutWindow(ZOOM_NONE, w); // update button status
MarkWholeScreenDirty();
}
/**
* Resizes the sprite in a very simple way, takes every n-th pixel and every n-th row
*
* @param sprite_src sprite to resize
* @param zoom resizing scale
* @return resized sprite
*/
static const SpriteLoader::Sprite *ResizeSprite(const SpriteLoader::Sprite *sprite_src, ZoomLevel zoom)
{
SpriteLoader::Sprite *sprite = MallocT<SpriteLoader::Sprite>(1);
if (zoom == ZOOM_LVL_NORMAL) {
memcpy(sprite, sprite_src, sizeof(*sprite));
uint size = sprite_src->height * sprite_src->width;
sprite->data = MallocT<SpriteLoader::CommonPixel>(size);
memcpy(sprite->data, sprite_src->data, size * sizeof(SpriteLoader::CommonPixel));
return sprite;
}
sprite->height = UnScaleByZoom(sprite_src->height, zoom);
sprite->width = UnScaleByZoom(sprite_src->width, zoom);
sprite->x_offs = UnScaleByZoom(sprite_src->x_offs, zoom);
sprite->y_offs = UnScaleByZoom(sprite_src->y_offs, zoom);
uint size = sprite->height * sprite->width;
SpriteLoader::CommonPixel *dst = sprite->data = CallocT<SpriteLoader::CommonPixel>(size);
const SpriteLoader::CommonPixel *src = (SpriteLoader::CommonPixel *)sprite_src->data;
const SpriteLoader::CommonPixel *src_end = src + sprite_src->height * sprite_src->width;
uint scaled_1 = ScaleByZoom(1, zoom);
for (uint y = 0; y < sprite->height; y++) {
if (src >= src_end) src = src_end - sprite_src->width;
const SpriteLoader::CommonPixel *src_ln = src + sprite_src->width * scaled_1;
for (uint x = 0; x < sprite->width; x++) {
if (src >= src_ln) src = src_ln - 1;
*dst = *src;
dst++;
src += scaled_1;
}
src = src_ln;
}
return sprite;
}
Sprite *Blitter_8bppOptimized::Encode(SpriteLoader::Sprite *sprite, Blitter::AllocatorProc *allocator)
{
/* Make memory for all zoom-levels */
uint memory = sizeof(SpriteData);
for (ZoomLevel i = ZOOM_LVL_BEGIN; i < ZOOM_LVL_END; i++) {
memory += UnScaleByZoom(sprite->height, i) * UnScaleByZoom(sprite->width, i);
}
/* We have no idea how much memory we really need, so just guess something */
memory *= 5;
/* Don't allocate memory each time, but just keep some
* memory around as this function is called quite often
* and the memory usage is quite low. */
static ReusableBuffer<byte> temp_buffer;
SpriteData *temp_dst = (SpriteData *)temp_buffer.Allocate(memory);
byte *dst = temp_dst->data;
/* Make the sprites per zoom-level */
for (ZoomLevel i = ZOOM_LVL_BEGIN; i < ZOOM_LVL_END; i++) {
/* Store the index table */
uint offset = dst - temp_dst->data;
temp_dst->offset[i] = offset;
/* cache values, because compiler can't cache it */
int scaled_height = UnScaleByZoom(sprite->height, i);
int scaled_width = UnScaleByZoom(sprite->width, i);
int scaled_1 = ScaleByZoom(1, i);
for (int y = 0; y < scaled_height; y++) {
uint trans = 0;
uint pixels = 0;
uint last_colour = 0;
byte *count_dst = NULL;
/* Store the scaled image */
const SpriteLoader::CommonPixel *src = &sprite->data[ScaleByZoom(y, i) * sprite->width];
const SpriteLoader::CommonPixel *src_end = &src[sprite->width];
for (int x = 0; x < scaled_width; x++) {
uint colour = 0;
/* Get the colour keeping in mind the zoom-level */
for (int j = 0; j < scaled_1; j++) {
if (src->m != 0) colour = src->m;
/* Because of the scaling it might happen we read outside the buffer. Avoid that. */
if (++src == src_end) break;
}
if (last_colour == 0 || colour == 0 || pixels == 255) {
if (count_dst != NULL) {
/* Write how many non-transparent bytes we get */
*count_dst = pixels;
pixels = 0;
count_dst = NULL;
}
/* As long as we find transparency bytes, keep counting */
if (colour == 0) {
last_colour = 0;
trans++;
continue;
}
/* No longer transparency, so write the amount of transparent bytes */
*dst = trans;
dst++;
trans = 0;
/* Reserve a byte for the pixel counter */
count_dst = dst;
dst++;
}
last_colour = colour;
pixels++;
*dst = colour;
dst++;
}
if (count_dst != NULL) *count_dst = pixels;
/* Write line-ending */
*dst = 0; dst++;
*dst = 0; dst++;
}
}
uint size = dst - (byte *)temp_dst;
/* Safety check, to make sure we guessed the size correctly */
assert(size < memory);
/* Allocate the exact amount of memory we need */
Sprite *dest_sprite = (Sprite *)allocator(sizeof(*dest_sprite) + size);
dest_sprite->height = sprite->height;
dest_sprite->width = sprite->width;
dest_sprite->x_offs = sprite->x_offs;
dest_sprite->y_offs = sprite->y_offs;
memcpy(dest_sprite->data, temp_dst, size);
return dest_sprite;
}