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OpenTTD/src/screenshot.cpp

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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file screenshot.cpp The creation of screenshots! */
#include "stdafx.h"
#include "core/backup_type.hpp"
#include "fileio_func.h"
#include "viewport_func.h"
#include "gfx_func.h"
#include "screenshot.h"
#include "screenshot_gui.h"
#include "blitter/factory.hpp"
#include "zoom_func.h"
#include "core/endian_func.hpp"
#include "saveload/saveload.h"
#include "company_base.h"
#include "company_func.h"
#include "strings_func.h"
#include "error.h"
#include "textbuf_gui.h"
#include "window_gui.h"
#include "window_func.h"
#include "tile_map.h"
#include "landscape.h"
#include "video/video_driver.hpp"
#include "smallmap_gui.h"
#include "table/strings.h"
#include "safeguards.h"
static const char * const SCREENSHOT_NAME = "screenshot"; ///< Default filename of a saved screenshot.
static const char * const HEIGHTMAP_NAME = "heightmap"; ///< Default filename of a saved heightmap.
std::string _screenshot_format_name; ///< Extension of the current screenshot format (corresponds with #_cur_screenshot_format).
static std::string _screenshot_name; ///< Filename of the screenshot file.
std::string _full_screenshot_path; ///< Pathname of the screenshot file.
uint _heightmap_highest_peak; ///< When saving a heightmap, this contains the highest peak on the map.
/**
* Callback function signature for generating lines of pixel data to be written to the screenshot file.
* @param userdata Pointer to user data.
* @param buf Destination buffer.
* @param y Line number of the first line to write.
* @param pitch Number of pixels to write (1 byte for 8bpp, 4 bytes for 32bpp). @see Colour
* @param n Number of lines to write.
*/
typedef void ScreenshotCallback(void *userdata, void *buf, uint y, uint pitch, uint n);
/**
* Function signature for a screenshot generation routine for one of the available formats.
* @param name Filename, including extension.
* @param callb Callback function for generating lines of pixels.
* @param userdata User data, passed on to \a callb.
* @param w Width of the image in pixels.
* @param h Height of the image in pixels.
* @param pixelformat Bits per pixel (bpp), either 8 or 32.
* @param palette %Colour palette (for 8bpp images).
* @return File was written successfully.
*/
typedef bool ScreenshotHandlerProc(const char *name, ScreenshotCallback *callb, void *userdata, uint w, uint h, int pixelformat, const Colour *palette);
/** Screenshot format information. */
struct ScreenshotFormat {
const char *extension; ///< File extension.
ScreenshotHandlerProc *proc; ///< Function for writing the screenshot.
};
#define MKCOLOUR(x) TO_LE32X(x)
/*************************************************
**** SCREENSHOT CODE FOR WINDOWS BITMAP (.BMP)
*************************************************/
/** BMP File Header (stored in little endian) */
PACK(struct BitmapFileHeader {
uint16_t type;
uint32_t size;
uint32_t reserved;
uint32_t off_bits;
});
static_assert(sizeof(BitmapFileHeader) == 14);
/** BMP Info Header (stored in little endian) */
struct BitmapInfoHeader {
uint32_t size;
int32_t width, height;
uint16_t planes, bitcount;
uint32_t compression, sizeimage, xpels, ypels, clrused, clrimp;
};
static_assert(sizeof(BitmapInfoHeader) == 40);
/** Format of palette data in BMP header */
struct RgbQuad {
uint8_t blue, green, red, reserved;
};
static_assert(sizeof(RgbQuad) == 4);
/**
* Generic .BMP writer
* @param name file name including extension
* @param callb callback used for gathering rendered image
* @param userdata parameters forwarded to \a callb
* @param w width in pixels
* @param h height in pixels
* @param pixelformat bits per pixel
* @param palette colour palette (for 8bpp mode)
* @return was everything ok?
* @see ScreenshotHandlerProc
*/
static bool MakeBMPImage(const char *name, ScreenshotCallback *callb, void *userdata, uint w, uint h, int pixelformat, const Colour *palette)
{
uint bpp; // bytes per pixel
switch (pixelformat) {
case 8: bpp = 1; break;
/* 32bpp mode is saved as 24bpp BMP */
case 32: bpp = 3; break;
/* Only implemented for 8bit and 32bit images so far */
default: return false;
}
FILE *f = fopen(name, "wb");
if (f == nullptr) return false;
/* Each scanline must be aligned on a 32bit boundary */
uint bytewidth = Align(w * bpp, 4); // bytes per line in file
/* Size of palette. Only present for 8bpp mode */
uint pal_size = pixelformat == 8 ? sizeof(RgbQuad) * 256 : 0;
/* Setup the file header */
BitmapFileHeader bfh;
bfh.type = TO_LE16('MB');
bfh.size = TO_LE32(sizeof(BitmapFileHeader) + sizeof(BitmapInfoHeader) + pal_size + static_cast<size_t>(bytewidth) * h);
bfh.reserved = 0;
bfh.off_bits = TO_LE32(sizeof(BitmapFileHeader) + sizeof(BitmapInfoHeader) + pal_size);
/* Setup the info header */
BitmapInfoHeader bih;
bih.size = TO_LE32(sizeof(BitmapInfoHeader));
bih.width = TO_LE32(w);
bih.height = TO_LE32(h);
bih.planes = TO_LE16(1);
bih.bitcount = TO_LE16(bpp * 8);
bih.compression = 0;
bih.sizeimage = 0;
bih.xpels = 0;
bih.ypels = 0;
bih.clrused = 0;
bih.clrimp = 0;
/* Write file header and info header */
if (fwrite(&bfh, sizeof(bfh), 1, f) != 1 || fwrite(&bih, sizeof(bih), 1, f) != 1) {
fclose(f);
return false;
}
if (pixelformat == 8) {
/* Convert the palette to the windows format */
RgbQuad rq[256];
for (uint i = 0; i < 256; i++) {
rq[i].red = palette[i].r;
rq[i].green = palette[i].g;
rq[i].blue = palette[i].b;
rq[i].reserved = 0;
}
/* Write the palette */
if (fwrite(rq, sizeof(rq), 1, f) != 1) {
fclose(f);
return false;
}
}
/* Try to use 64k of memory, store between 16 and 128 lines */
uint maxlines = Clamp(65536 / (w * pixelformat / 8), 16, 128); // number of lines per iteration
uint8_t *buff = MallocT<uint8_t>(maxlines * w * pixelformat / 8); // buffer which is rendered to
uint8_t *line = CallocT<uint8_t>(bytewidth); // one line, stored to file
/* Start at the bottom, since bitmaps are stored bottom up */
do {
uint n = std::min(h, maxlines);
h -= n;
/* Render the pixels */
callb(userdata, buff, h, w, n);
/* Write each line */
while (n-- != 0) {
if (pixelformat == 8) {
/* Move to 'line', leave last few pixels in line zeroed */
memcpy(line, buff + n * w, w);
} else {
/* Convert from 'native' 32bpp to BMP-like 24bpp.
* Works for both big and little endian machines */
Colour *src = ((Colour *)buff) + n * w;
uint8_t *dst = line;
for (uint i = 0; i < w; i++) {
dst[i * 3 ] = src[i].b;
dst[i * 3 + 1] = src[i].g;
dst[i * 3 + 2] = src[i].r;
}
}
/* Write to file */
if (fwrite(line, bytewidth, 1, f) != 1) {
free(line);
free(buff);
fclose(f);
return false;
}
}
} while (h != 0);
free(line);
free(buff);
fclose(f);
return true;
}
/*********************************************************
**** SCREENSHOT CODE FOR PORTABLE NETWORK GRAPHICS (.PNG)
*********************************************************/
#if defined(WITH_PNG)
#include <png.h>
#ifdef PNG_TEXT_SUPPORTED
#include "rev.h"
#include "newgrf_config.h"
#include "ai/ai_info.hpp"
#include "company_base.h"
#include "base_media_base.h"
#endif /* PNG_TEXT_SUPPORTED */
static void PNGAPI png_my_error(png_structp png_ptr, png_const_charp message)
{
Debug(misc, 0, "[libpng] error: {} - {}", message, (const char *)png_get_error_ptr(png_ptr));
longjmp(png_jmpbuf(png_ptr), 1);
}
static void PNGAPI png_my_warning(png_structp png_ptr, png_const_charp message)
{
Debug(misc, 1, "[libpng] warning: {} - {}", message, (const char *)png_get_error_ptr(png_ptr));
}
/**
* Generic .PNG file image writer.
* @param name Filename, including extension.
* @param callb Callback function for generating lines of pixels.
* @param userdata User data, passed on to \a callb.
* @param w Width of the image in pixels.
* @param h Height of the image in pixels.
* @param pixelformat Bits per pixel (bpp), either 8 or 32.
* @param palette %Colour palette (for 8bpp images).
* @return File was written successfully.
* @see ScreenshotHandlerProc
*/
static bool MakePNGImage(const char *name, ScreenshotCallback *callb, void *userdata, uint w, uint h, int pixelformat, const Colour *palette)
{
png_color rq[256];
FILE *f;
uint i, y, n;
uint maxlines;
uint bpp = pixelformat / 8;
png_structp png_ptr;
png_infop info_ptr;
/* only implemented for 8bit and 32bit images so far. */
if (pixelformat != 8 && pixelformat != 32) return false;
f = fopen(name, "wb");
if (f == nullptr) return false;
png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, const_cast<char *>(name), png_my_error, png_my_warning);
if (png_ptr == nullptr) {
fclose(f);
return false;
}
info_ptr = png_create_info_struct(png_ptr);
if (info_ptr == nullptr) {
png_destroy_write_struct(&png_ptr, (png_infopp)nullptr);
fclose(f);
return false;
}
if (setjmp(png_jmpbuf(png_ptr))) {
png_destroy_write_struct(&png_ptr, &info_ptr);
fclose(f);
return false;
}
png_init_io(png_ptr, f);
png_set_filter(png_ptr, 0, PNG_FILTER_NONE);
png_set_IHDR(png_ptr, info_ptr, w, h, 8, pixelformat == 8 ? PNG_COLOR_TYPE_PALETTE : PNG_COLOR_TYPE_RGB,
PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_DEFAULT, PNG_FILTER_TYPE_DEFAULT);
#ifdef PNG_TEXT_SUPPORTED
/* Try to add some game metadata to the PNG screenshot so
* it's more useful for debugging and archival purposes. */
png_text_struct text[2];
memset(text, 0, sizeof(text));
text[0].key = const_cast<char *>("Software");
text[0].text = const_cast<char *>(_openttd_revision);
text[0].text_length = strlen(_openttd_revision);
text[0].compression = PNG_TEXT_COMPRESSION_NONE;
std::string message;
message.reserve(1024);
fmt::format_to(std::back_inserter(message), "Graphics set: {} ({})\n", BaseGraphics::GetUsedSet()->name, BaseGraphics::GetUsedSet()->version);
message += "NewGRFs:\n";
for (const GRFConfig *c = _game_mode == GM_MENU ? nullptr : _grfconfig; c != nullptr; c = c->next) {
fmt::format_to(std::back_inserter(message), "{:08X} {} {}\n", BSWAP32(c->ident.grfid), FormatArrayAsHex(c->ident.md5sum), c->filename);
}
message += "\nCompanies:\n";
for (const Company *c : Company::Iterate()) {
if (c->ai_info == nullptr) {
fmt::format_to(std::back_inserter(message), "{:2d}: Human\n", (int)c->index);
} else {
fmt::format_to(std::back_inserter(message), "{:2d}: {} (v{})\n", (int)c->index, c->ai_info->GetName(), c->ai_info->GetVersion());
}
}
text[1].key = const_cast<char *>("Description");
text[1].text = const_cast<char *>(message.c_str());
text[1].text_length = message.size();
text[1].compression = PNG_TEXT_COMPRESSION_zTXt;
png_set_text(png_ptr, info_ptr, text, 2);
#endif /* PNG_TEXT_SUPPORTED */
if (pixelformat == 8) {
/* convert the palette to the .PNG format. */
for (i = 0; i != 256; i++) {
rq[i].red = palette[i].r;
rq[i].green = palette[i].g;
rq[i].blue = palette[i].b;
}
png_set_PLTE(png_ptr, info_ptr, rq, 256);
}
png_write_info(png_ptr, info_ptr);
png_set_flush(png_ptr, 512);
if (pixelformat == 32) {
png_color_8 sig_bit;
/* Save exact colour/alpha resolution */
sig_bit.alpha = 0;
sig_bit.blue = 8;
sig_bit.green = 8;
sig_bit.red = 8;
sig_bit.gray = 8;
png_set_sBIT(png_ptr, info_ptr, &sig_bit);
#if TTD_ENDIAN == TTD_LITTLE_ENDIAN
png_set_bgr(png_ptr);
png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
#else
png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
#endif /* TTD_ENDIAN == TTD_LITTLE_ENDIAN */
}
/* use by default 64k temp memory */
maxlines = Clamp(65536 / w, 16, 128);
/* now generate the bitmap bits */
void *buff = CallocT<uint8_t>(static_cast<size_t>(w) * maxlines * bpp); // by default generate 128 lines at a time.
y = 0;
do {
/* determine # lines to write */
n = std::min(h - y, maxlines);
/* render the pixels into the buffer */
callb(userdata, buff, y, w, n);
y += n;
/* write them to png */
for (i = 0; i != n; i++) {
png_write_row(png_ptr, (png_bytep)buff + i * w * bpp);
}
} while (y != h);
png_write_end(png_ptr, info_ptr);
png_destroy_write_struct(&png_ptr, &info_ptr);
free(buff);
fclose(f);
return true;
}
#endif /* WITH_PNG */
/*************************************************
**** SCREENSHOT CODE FOR ZSOFT PAINTBRUSH (.PCX)
*************************************************/
/** Definition of a PCX file header. */
struct PcxHeader {
uint8_t manufacturer;
uint8_t version;
uint8_t rle;
uint8_t bpp;
uint32_t unused;
uint16_t xmax, ymax;
uint16_t hdpi, vdpi;
uint8_t pal_small[16 * 3];
uint8_t reserved;
uint8_t planes;
uint16_t pitch;
uint16_t cpal;
uint16_t width;
uint16_t height;
uint8_t filler[54];
};
static_assert(sizeof(PcxHeader) == 128);
/**
* Generic .PCX file image writer.
* @param name Filename, including extension.
* @param callb Callback function for generating lines of pixels.
* @param userdata User data, passed on to \a callb.
* @param w Width of the image in pixels.
* @param h Height of the image in pixels.
* @param pixelformat Bits per pixel (bpp), either 8 or 32.
* @param palette %Colour palette (for 8bpp images).
* @return File was written successfully.
* @see ScreenshotHandlerProc
*/
static bool MakePCXImage(const char *name, ScreenshotCallback *callb, void *userdata, uint w, uint h, int pixelformat, const Colour *palette)
{
FILE *f;
uint maxlines;
uint y;
PcxHeader pcx;
bool success;
if (pixelformat == 32) {
Debug(misc, 0, "Can't convert a 32bpp screenshot to PCX format. Please pick another format.");
return false;
}
if (pixelformat != 8 || w == 0) return false;
f = fopen(name, "wb");
if (f == nullptr) return false;
memset(&pcx, 0, sizeof(pcx));
/* setup pcx header */
pcx.manufacturer = 10;
pcx.version = 5;
pcx.rle = 1;
pcx.bpp = 8;
pcx.xmax = TO_LE16(w - 1);
pcx.ymax = TO_LE16(h - 1);
pcx.hdpi = TO_LE16(320);
pcx.vdpi = TO_LE16(320);
pcx.planes = 1;
pcx.cpal = TO_LE16(1);
pcx.width = pcx.pitch = TO_LE16(w);
pcx.height = TO_LE16(h);
/* write pcx header */
if (fwrite(&pcx, sizeof(pcx), 1, f) != 1) {
fclose(f);
return false;
}
/* use by default 64k temp memory */
maxlines = Clamp(65536 / w, 16, 128);
/* now generate the bitmap bits */
uint8_t *buff = CallocT<uint8_t>(static_cast<size_t>(w) * maxlines); // by default generate 128 lines at a time.
y = 0;
do {
/* determine # lines to write */
uint n = std::min(h - y, maxlines);
uint i;
/* render the pixels into the buffer */
callb(userdata, buff, y, w, n);
y += n;
/* write them to pcx */
for (i = 0; i != n; i++) {
const uint8_t *bufp = buff + i * w;
uint8_t runchar = bufp[0];
uint runcount = 1;
uint j;
/* for each pixel... */
for (j = 1; j < w; j++) {
uint8_t ch = bufp[j];
if (ch != runchar || runcount >= 0x3f) {
if (runcount > 1 || (runchar & 0xC0) == 0xC0) {
if (fputc(0xC0 | runcount, f) == EOF) {
free(buff);
fclose(f);
return false;
}
}
if (fputc(runchar, f) == EOF) {
free(buff);
fclose(f);
return false;
}
runcount = 0;
runchar = ch;
}
runcount++;
}
/* write remaining bytes.. */
if (runcount > 1 || (runchar & 0xC0) == 0xC0) {
if (fputc(0xC0 | runcount, f) == EOF) {
free(buff);
fclose(f);
return false;
}
}
if (fputc(runchar, f) == EOF) {
free(buff);
fclose(f);
return false;
}
}
} while (y != h);
free(buff);
/* write 8-bit colour palette */
if (fputc(12, f) == EOF) {
fclose(f);
return false;
}
/* Palette is word-aligned, copy it to a temporary byte array */
uint8_t tmp[256 * 3];
for (uint i = 0; i < 256; i++) {
tmp[i * 3 + 0] = palette[i].r;
tmp[i * 3 + 1] = palette[i].g;
tmp[i * 3 + 2] = palette[i].b;
}
success = fwrite(tmp, sizeof(tmp), 1, f) == 1;
fclose(f);
return success;
}
/*************************************************
**** GENERIC SCREENSHOT CODE
*************************************************/
/** Available screenshot formats. */
static const ScreenshotFormat _screenshot_formats[] = {
#if defined(WITH_PNG)
{"png", &MakePNGImage},
#endif
{"bmp", &MakeBMPImage},
{"pcx", &MakePCXImage},
};
/* The currently loaded screenshot format. Set to a valid value as it might be used in early crash logs, when InitializeScreenshotFormats has not been called yet. */
static const ScreenshotFormat *_cur_screenshot_format = std::begin(_screenshot_formats);
/** Get filename extension of current screenshot file format. */
const char *GetCurrentScreenshotExtension()
{
return _cur_screenshot_format->extension;
}
/** Initialize screenshot format information on startup, with #_screenshot_format_name filled from the loadsave code. */
void InitializeScreenshotFormats()
{
for (auto &format : _screenshot_formats) {
if (_screenshot_format_name == format.extension) {
_cur_screenshot_format = &format;
return;
}
}
_cur_screenshot_format = std::begin(_screenshot_formats);
}
/**
* Callback of the screenshot generator that dumps the current video buffer.
* @see ScreenshotCallback
*/
static void CurrentScreenCallback(void *, void *buf, uint y, uint pitch, uint n)
{
Blitter *blitter = BlitterFactory::GetCurrentBlitter();
void *src = blitter->MoveTo(_screen.dst_ptr, 0, y);
blitter->CopyImageToBuffer(src, buf, _screen.width, n, pitch);
}
/**
* generate a large piece of the world
* @param userdata Viewport area to draw
* @param buf Videobuffer with same bitdepth as current blitter
* @param y First line to render
* @param pitch Pitch of the videobuffer
* @param n Number of lines to render
*/
static void LargeWorldCallback(void *userdata, void *buf, uint y, uint pitch, uint n)
{
Viewport *vp = (Viewport *)userdata;
DrawPixelInfo dpi;
int wx, left;
/* We are no longer rendering to the screen */
DrawPixelInfo old_screen = _screen;
bool old_disable_anim = _screen_disable_anim;
_screen.dst_ptr = buf;
_screen.width = pitch;
_screen.height = n;
_screen.pitch = pitch;
_screen_disable_anim = true;
AutoRestoreBackup dpi_backup(_cur_dpi, &dpi);
dpi.dst_ptr = buf;
dpi.height = n;
dpi.width = vp->width;
dpi.pitch = pitch;
dpi.zoom = ZOOM_LVL_WORLD_SCREENSHOT;
dpi.left = 0;
dpi.top = y;
/* Render viewport in blocks of 1600 pixels width */
left = 0;
while (vp->width - left != 0) {
wx = std::min(vp->width - left, 1600);
left += wx;
ViewportDoDraw(vp,
ScaleByZoom(left - wx - vp->left, vp->zoom) + vp->virtual_left,
ScaleByZoom(y - vp->top, vp->zoom) + vp->virtual_top,
ScaleByZoom(left - vp->left, vp->zoom) + vp->virtual_left,
ScaleByZoom((y + n) - vp->top, vp->zoom) + vp->virtual_top
);
}
/* Switch back to rendering to the screen */
_screen = old_screen;
_screen_disable_anim = old_disable_anim;
}
/**
* Construct a pathname for a screenshot file.
* @param default_fn Default filename.
* @param ext Extension to use.
* @param crashlog Create path for crash.png
* @return Pathname for a screenshot file.
*/
static const char *MakeScreenshotName(const char *default_fn, const char *ext, bool crashlog = false)
{
bool generate = _screenshot_name.empty();
if (generate) {
if (_game_mode == GM_EDITOR || _game_mode == GM_MENU || _local_company == COMPANY_SPECTATOR) {
_screenshot_name = default_fn;
} else {
_screenshot_name = GenerateDefaultSaveName();
}
}
/* Handle user-specified filenames ending in # with automatic numbering */
if (_screenshot_name.ends_with("#")) {
generate = true;
_screenshot_name.pop_back();
}
size_t len = _screenshot_name.size();
/* Add extension to screenshot file */
_screenshot_name += fmt::format(".{}", ext);
const char *screenshot_dir = crashlog ? _personal_dir.c_str() : FiosGetScreenshotDir();
for (uint serial = 1;; serial++) {
_full_screenshot_path = fmt::format("{}{}", screenshot_dir, _screenshot_name);
if (!generate) break; // allow overwriting of non-automatic filenames
if (!FileExists(_full_screenshot_path)) break;
/* If file exists try another one with same name, but just with a higher index */
_screenshot_name.erase(len);
_screenshot_name += fmt::format("#{}.{}", serial, ext);
}
return _full_screenshot_path.c_str();
}
/** Make a screenshot of the current screen. */
static bool MakeSmallScreenshot(bool crashlog)
{
return _cur_screenshot_format->proc(MakeScreenshotName(SCREENSHOT_NAME, _cur_screenshot_format->extension, crashlog), CurrentScreenCallback, nullptr, _screen.width, _screen.height,
BlitterFactory::GetCurrentBlitter()->GetScreenDepth(), _cur_palette.palette);
}
/**
* Configure a Viewport for rendering (a part of) the map into a screenshot.
* @param t Screenshot type
* @param width the width of the screenshot, or 0 for current viewport width (needs to be 0 with SC_VIEWPORT, SC_CRASHLOG, and SC_WORLD).
* @param height the height of the screenshot, or 0 for current viewport height (needs to be 0 with SC_VIEWPORT, SC_CRASHLOG, and SC_WORLD).
* @param[out] vp Result viewport
*/
void SetupScreenshotViewport(ScreenshotType t, Viewport *vp, uint32_t width, uint32_t height)
{
switch(t) {
case SC_VIEWPORT:
case SC_CRASHLOG: {
assert(width == 0 && height == 0);
Window *w = GetMainWindow();
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 = _screen.width;
vp->height = _screen.height;
vp->overlay = w->viewport->overlay;
break;
}
case SC_WORLD: {
assert(width == 0 && height == 0);
/* Determine world coordinates of screenshot */
vp->zoom = ZOOM_LVL_WORLD_SCREENSHOT;
TileIndex north_tile = _settings_game.construction.freeform_edges ? TileXY(1, 1) : TileXY(0, 0);
TileIndex south_tile = Map::Size() - 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;
/* 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 = nullptr;
break;
}
default: {
vp->zoom = (t == SC_ZOOMEDIN) ? _settings_client.gui.zoom_min : ZOOM_LVL_VIEWPORT;
Window *w = GetMainWindow();
vp->virtual_left = w->viewport->virtual_left;
vp->virtual_top = w->viewport->virtual_top;
if (width == 0 || height == 0) {
vp->virtual_width = w->viewport->virtual_width;
vp->virtual_height = w->viewport->virtual_height;
} else {
vp->virtual_width = width << vp->zoom;
vp->virtual_height = height << vp->zoom;
}
/* 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 = nullptr;
break;
}
}
}
/**
* Make a screenshot of the map.
* @param t Screenshot type: World or viewport screenshot
* @param width the width of the screenshot of, or 0 for current viewport width.
* @param height the height of the screenshot of, or 0 for current viewport height.
* @return true on success
*/
static bool MakeLargeWorldScreenshot(ScreenshotType t, uint32_t width = 0, uint32_t height = 0)
{
Viewport vp;
SetupScreenshotViewport(t, &vp, width, height);
return _cur_screenshot_format->proc(MakeScreenshotName(SCREENSHOT_NAME, _cur_screenshot_format->extension), LargeWorldCallback, &vp, vp.width, vp.height,
BlitterFactory::GetCurrentBlitter()->GetScreenDepth(), _cur_palette.palette);
}
/**
* Callback for generating a heightmap. Supports 8bpp grayscale only.
* @param buffer Destination buffer.
* @param y Line number of the first line to write.
* @param n Number of lines to write.
* @see ScreenshotCallback
*/
static void HeightmapCallback(void *, void *buffer, uint y, uint, uint n)
{
uint8_t *buf = (uint8_t *)buffer;
while (n > 0) {
TileIndex ti = TileXY(Map::MaxX(), y);
for (uint x = Map::MaxX(); true; x--) {
*buf = 256 * TileHeight(ti) / (1 + _heightmap_highest_peak);
buf++;
if (x == 0) break;
ti = TileAddXY(ti, -1, 0);
}
y++;
n--;
}
}
/**
* Make a heightmap of the current map.
* @param filename Filename to use for saving.
*/
bool MakeHeightmapScreenshot(const char *filename)
{
Colour palette[256];
for (uint i = 0; i < lengthof(palette); i++) {
palette[i].a = 0xff;
palette[i].r = i;
palette[i].g = i;
palette[i].b = i;
}
_heightmap_highest_peak = 0;
for (TileIndex tile = 0; tile < Map::Size(); tile++) {
uint h = TileHeight(tile);
_heightmap_highest_peak = std::max(h, _heightmap_highest_peak);
}
return _cur_screenshot_format->proc(filename, HeightmapCallback, nullptr, Map::SizeX(), Map::SizeY(), 8, palette);
}
static ScreenshotType _confirmed_screenshot_type; ///< Screenshot type the current query is about to confirm.
/**
* Callback on the confirmation window for huge screenshots.
* @param confirmed true on confirmation
*/
static void ScreenshotConfirmationCallback(Window *, bool confirmed)
{
if (confirmed) MakeScreenshot(_confirmed_screenshot_type, {});
}
/**
* Make a screenshot.
* Ask for confirmation first if the screenshot will be huge.
* @param t Screenshot type: World, defaultzoom, heightmap or viewport screenshot
* @see MakeScreenshot
*/
void MakeScreenshotWithConfirm(ScreenshotType t)
{
Viewport vp;
SetupScreenshotViewport(t, &vp);
bool heightmap_or_minimap = t == SC_HEIGHTMAP || t == SC_MINIMAP;
uint64_t width = (heightmap_or_minimap ? Map::SizeX() : vp.width);
uint64_t height = (heightmap_or_minimap ? Map::SizeY() : vp.height);
if (width * height > 8192 * 8192) {
/* Ask for confirmation */
_confirmed_screenshot_type = t;
SetDParam(0, width);
SetDParam(1, height);
ShowQuery(STR_WARNING_SCREENSHOT_SIZE_CAPTION, STR_WARNING_SCREENSHOT_SIZE_MESSAGE, nullptr, ScreenshotConfirmationCallback);
} else {
/* Less than 64M pixels, just do it */
MakeScreenshot(t, {});
}
}
/**
* Make a screenshot.
* @param t the type of screenshot to make.
* @param name the name to give to the screenshot.
* @param width the width of the screenshot of, or 0 for current viewport width (only works for SC_ZOOMEDIN and SC_DEFAULTZOOM).
* @param height the height of the screenshot of, or 0 for current viewport height (only works for SC_ZOOMEDIN and SC_DEFAULTZOOM).
* @return true iff the screenshot was made successfully
*/
static bool RealMakeScreenshot(ScreenshotType t, std::string name, uint32_t width, uint32_t height)
{
if (t == SC_VIEWPORT) {
/* First draw the dirty parts of the screen and only then change the name
* of the screenshot. This way the screenshot will always show the name
* of the previous screenshot in the 'successful' message instead of the
* name of the new screenshot (or an empty name). */
SetScreenshotWindowVisibility(true);
UndrawMouseCursor();
DrawDirtyBlocks();
SetScreenshotWindowVisibility(false);
}
_screenshot_name = name;
bool ret;
switch (t) {
case SC_VIEWPORT:
ret = MakeSmallScreenshot(false);
break;
case SC_CRASHLOG:
ret = MakeSmallScreenshot(true);
break;
case SC_ZOOMEDIN:
case SC_DEFAULTZOOM:
ret = MakeLargeWorldScreenshot(t, width, height);
break;
case SC_WORLD:
ret = MakeLargeWorldScreenshot(t);
break;
case SC_HEIGHTMAP: {
ret = MakeHeightmapScreenshot(MakeScreenshotName(HEIGHTMAP_NAME, _cur_screenshot_format->extension));
break;
}
case SC_MINIMAP:
ret = MakeMinimapWorldScreenshot();
break;
default:
NOT_REACHED();
}
if (ret) {
if (t == SC_HEIGHTMAP) {
SetDParamStr(0, _screenshot_name);
SetDParam(1, _heightmap_highest_peak);
ShowErrorMessage(STR_MESSAGE_HEIGHTMAP_SUCCESSFULLY, INVALID_STRING_ID, WL_WARNING);
} else {
SetDParamStr(0, _screenshot_name);
ShowErrorMessage(STR_MESSAGE_SCREENSHOT_SUCCESSFULLY, INVALID_STRING_ID, WL_WARNING);
}
} else {
ShowErrorMessage(STR_ERROR_SCREENSHOT_FAILED, INVALID_STRING_ID, WL_ERROR);
}
return ret;
}
/**
* Schedule making a screenshot.
* Unconditionally take a screenshot of the requested type.
* @param t the type of screenshot to make.
* @param name the name to give to the screenshot.
* @param width the width of the screenshot of, or 0 for current viewport width (only works for SC_ZOOMEDIN and SC_DEFAULTZOOM).
* @param height the height of the screenshot of, or 0 for current viewport height (only works for SC_ZOOMEDIN and SC_DEFAULTZOOM).
* @return true iff the screenshot was successfully made.
* @see MakeScreenshotWithConfirm
*/
bool MakeScreenshot(ScreenshotType t, std::string name, uint32_t width, uint32_t height)
{
if (t == SC_CRASHLOG) {
/* Video buffer might or might not be locked. */
VideoDriver::VideoBufferLocker lock;
return RealMakeScreenshot(t, name, width, height);
}
VideoDriver::GetInstance()->QueueOnMainThread([=] { // Capture by value to not break scope.
RealMakeScreenshot(t, name, width, height);
});
return true;
}
static void MinimapScreenCallback(void *, void *buf, uint y, uint pitch, uint n)
{
uint32_t *ubuf = (uint32_t *)buf;
uint num = (pitch * n);
for (uint i = 0; i < num; i++) {
uint row = y + (int)(i / pitch);
uint col = (Map::SizeX() - 1) - (i % pitch);
TileIndex tile = TileXY(col, row);
uint8_t val = GetSmallMapOwnerPixels(tile, GetTileType(tile), IncludeHeightmap::Never) & 0xFF;
uint32_t colour_buf = 0;
colour_buf = (_cur_palette.palette[val].b << 0);
colour_buf |= (_cur_palette.palette[val].g << 8);
colour_buf |= (_cur_palette.palette[val].r << 16);
*ubuf = colour_buf;
ubuf++; // Skip alpha
}
}
/**
* Make a minimap screenshot.
*/
bool MakeMinimapWorldScreenshot()
{
return _cur_screenshot_format->proc(MakeScreenshotName(SCREENSHOT_NAME, _cur_screenshot_format->extension), MinimapScreenCallback, nullptr, Map::SizeX(), Map::SizeY(), 32, _cur_palette.palette);
}
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