/**
* Configure a ViewPort for rendering (a part of) the map into a screenshot.
* @param t Screenshot type
* @param [out] vp Result viewport
*/
void SetupScreenshotViewport(ScreenshotType t, ViewPort *vp)
{
/* Determine world coordinates of screenshot */
if (t == SC_WORLD) {
vp->zoom = ZOOM_LVL_WORLD_SCREENSHOT;
TileIndex north_tile = _settings_game.construction.freeform_edges ? TileXY(1, 1) : TileXY(0, 0);
TileIndex south_tile = MapSize() - 1;
/* We need to account for a hill or high building at tile 0,0. */
int extra_height_top = TilePixelHeight(north_tile) + 150;
/* If there is a hill at the bottom don't create a large black area. */
int reclaim_height_bottom = TilePixelHeight(south_tile);
vp->virtual_left = RemapCoords(TileX(south_tile) * TILE_SIZE, TileY(north_tile) * TILE_SIZE, 0).x;
vp->virtual_top = RemapCoords(TileX(north_tile) * TILE_SIZE, TileY(north_tile) * TILE_SIZE, extra_height_top).y;
vp->virtual_width = RemapCoords(TileX(north_tile) * TILE_SIZE, TileY(south_tile) * TILE_SIZE, 0).x - vp->virtual_left + 1;
vp->virtual_height = RemapCoords(TileX(south_tile) * TILE_SIZE, TileY(south_tile) * TILE_SIZE, reclaim_height_bottom).y - vp->virtual_top + 1;
} else {
vp->zoom = (t == SC_ZOOMEDIN) ? _settings_client.gui.zoom_min : ZOOM_LVL_VIEWPORT;
Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
vp->virtual_left = w->viewport->virtual_left;
vp->virtual_top = w->viewport->virtual_top;
vp->virtual_width = w->viewport->virtual_width;
vp->virtual_height = w->viewport->virtual_height;
}
/* Compute pixel coordinates */
vp->left = 0;
vp->top = 0;
vp->width = UnScaleByZoom(vp->virtual_width, vp->zoom);
vp->height = UnScaleByZoom(vp->virtual_height, vp->zoom);
vp->overlay = NULL;
}
/** Make a zoomed-in screenshot of the currently visible area. */
static bool MakeZoomedInScreenshot()
{
Window *w = FindWindowById(WC_MAIN_WINDOW, 0);
ViewPort vp;
vp.zoom = _settings_client.gui.zoom_min;
vp.left = w->viewport->left;
vp.top = w->viewport->top;
vp.virtual_left = w->viewport->virtual_left;
vp.virtual_top = w->viewport->virtual_top;
vp.virtual_width = w->viewport->virtual_width;
vp.width = UnScaleByZoom(vp.virtual_width, vp.zoom);
vp.virtual_height = w->viewport->virtual_height;
vp.height = UnScaleByZoom(vp.virtual_height, vp.zoom);
const ScreenshotFormat *sf = _screenshot_formats + _cur_screenshot_format;
return sf->proc(MakeScreenshotName(SCREENSHOT_NAME, sf->extension), LargeWorldCallback, &vp, vp.width, vp.height,
BlitterFactoryBase::GetCurrentBlitter()->GetScreenDepth(), _cur_palette.palette);
}
/**
* Draws an image of a ship
* @param v Front vehicle
* @param left The minimum horizontal position
* @param right The maximum horizontal position
* @param y Vertical position to draw at
* @param selection Selected vehicle to draw a frame around
*/
void DrawShipImage(const Vehicle *v, int left, int right, int y, VehicleID selection, EngineImageType image_type)
{
bool rtl = _current_text_dir == TD_RTL;
SpriteID sprite = v->GetImage(rtl ? DIR_E : DIR_W, image_type);
const Sprite *real_sprite = GetSprite(sprite, ST_NORMAL);
int width = UnScaleByZoom(real_sprite->width, ZOOM_LVL_GUI);
int x_offs = UnScaleByZoom(real_sprite->x_offs, ZOOM_LVL_GUI);
int x = rtl ? right - width - x_offs : left - x_offs;
DrawSprite(sprite, GetVehiclePalette(v), x, y + 10);
if (v->index == selection) {
x += x_offs;
y += UnScaleByZoom(real_sprite->y_offs, ZOOM_LVL_GUI) + 10;
DrawFrameRect(x - 1, y - 1, x + width + 1, y + UnScaleByZoom(real_sprite->height, ZOOM_LVL_GUI) + 1, COLOUR_WHITE, FR_BORDERONLY);
}
}
/**
* 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;
}