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/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "ags/shared/font/wfn_font_renderer.h"
#include "ags/shared/ac/common.h" // our_eip
#include "ags/shared/core/asset_manager.h"
#include "ags/shared/debugging/out.h"
#include "ags/shared/font/wfn_font.h"
#include "ags/shared/gfx/bitmap.h"
#include "ags/shared/util/stream.h"
#include "ags/globals.h"
namespace AGS3 {
using namespace AGS::Shared;
void WFNFontRenderer::AdjustYCoordinateForFont(int *ycoord, int fontNumber) {
// Do nothing
}
void WFNFontRenderer::EnsureTextValidForFont(char *text, int fontNumber) {
// Do nothing
}
int WFNFontRenderer::GetTextWidth(const char *text, int fontNumber) {
const WFNFont *font = _fontData[fontNumber].Font;
const FontRenderParams ¶ms = _fontData[fontNumber].Params;
int text_width = 0;
for (int code = ugetxc(&text); code; code = ugetxc(&text)) {
text_width += font->GetChar(code).Width;
}
return text_width * params.SizeMultiplier;
}
int WFNFontRenderer::GetTextHeight(const char *text, int fontNumber) {
const WFNFont *font = _fontData[fontNumber].Font;
const FontRenderParams ¶ms = _fontData[fontNumber].Params;
int max_height = 0;
for (int code = ugetxc(&text); code; code = ugetxc(&text)) {
const uint16_t height = font->GetChar(code).Height;
max_height = std::max(max_height, static_cast<int>(height));
}
return max_height * params.SizeMultiplier;
}
static int RenderChar(Bitmap *ds, const int at_x, const int at_y, Rect clip,
const WFNChar &wfn_char, const int scale, const color_t text_color);
void WFNFontRenderer::RenderText(const char *text, int fontNumber, BITMAP *destination, int x, int y, int colour) {
int oldeip = get_our_eip();
set_our_eip(415);
const WFNFont *font = _fontData[fontNumber].Font;
const FontRenderParams ¶ms = _fontData[fontNumber].Params;
Bitmap ds(destination, true);
// NOTE: allegro's putpixel ignores clipping (optimization),
// so we'll have to accommodate for that ourselves
Rect clip = ds.GetClip();
for (int code = ugetxc(&text); code; code = ugetxc(&text))
x += RenderChar(&ds, x, y, clip, font->GetChar(code), params.SizeMultiplier, colour);
set_our_eip(oldeip);
}
static int RenderChar(Bitmap *ds, const int at_x, const int at_y, Rect clip,
const WFNChar &wfn_char, const int scale, const color_t text_color) {
const int width = wfn_char.Width;
const int height = wfn_char.Height;
const unsigned char *actdata = wfn_char.Data;
const int bytewid = wfn_char.GetRowByteCount();
int sx = std::max(at_x, clip.Left), ex = clip.Right + 1;
int sy = std::max(at_y, clip.Top), ey = clip.Bottom + 1;
int sw = std::max(0, clip.Left - at_x);
int sh = std::max(0, clip.Top - at_y);
for (int h = sh, y = sy; h < height && y < ey; ++h, y += scale) {
for (int w = sw, x = sx; w < width && x < ex; ++w, x += scale) {
if (((actdata[h * bytewid + (w / 8)] & (0x80 >> (w % 8))) != 0)) {
if (scale > 1) {
ds->FillRect(RectWH(x, y, scale, scale), text_color);
} else {
ds->PutPixel(x, y, text_color);
}
}
}
}
return width * scale;
}
bool WFNFontRenderer::LoadFromDisk(int fontNumber, int fontSize) {
return LoadFromDiskEx(fontNumber, fontSize, nullptr, nullptr, nullptr);
}
bool WFNFontRenderer::IsBitmapFont() {
return true;
}
bool WFNFontRenderer::LoadFromDiskEx(int fontNumber, int /*fontSize*/, String *src_filename,
const FontRenderParams *params, FontMetrics *metrics) {
String file_name;
Stream *ffi = nullptr;
file_name.Format("agsfnt%d.wfn", fontNumber);
ffi = _GP(AssetMgr)->OpenAsset(file_name);
if (ffi == nullptr) {
// actual font not found, try font 0 instead
// FIXME: this should not be done here in this font renderer implementation,
// but somewhere outside, when whoever calls this method
file_name = "agsfnt0.wfn";
ffi = _GP(AssetMgr)->OpenAsset(file_name);
if (ffi == nullptr)
return false;
}
WFNFont *font = new WFNFont();
WFNError err = font->ReadFromFile(ffi);
delete ffi;
if (err == kWFNErr_HasBadCharacters)
Debug::Printf(kDbgMsg_Warn, "WARNING: font '%s' has mistakes in data format, some characters may be displayed incorrectly", file_name.GetCStr());
else if (err != kWFNErr_NoError) {
delete font;
return false;
}
_fontData[fontNumber].Font = font;
_fontData[fontNumber].Params = params ? *params : FontRenderParams();
if (src_filename)
*src_filename = file_name;
if (metrics)
*metrics = FontMetrics();
return true;
}
void WFNFontRenderer::FreeMemory(int fontNumber) {
delete _fontData[fontNumber].Font;
_fontData.erase(fontNumber);
}
bool WFNFontRenderer::SupportsExtendedCharacters(int fontNumber) {
return _fontData[fontNumber].Font->GetCharCount() > 128;
}
} // namespace AGS3
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