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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 2
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include "common/util.h"
#include "common/stack.h"
#include "graphics/primitives.h"
#include "sci/sci.h"
#include "sci/engine/kernel.h"
#include "sci/engine/selector.h"
#include "sci/engine/state.h"
#include "sci/graphics/cache.h"
#include "sci/graphics/compare.h"
#include "sci/graphics/font.h"
#include "sci/graphics/screen.h"
#include "sci/graphics/text32.h"
namespace Sci {
#define BITMAP_HEADER_SIZE 46
#define SCI_TEXT32_ALIGNMENT_RIGHT -1
#define SCI_TEXT32_ALIGNMENT_CENTER 1
#define SCI_TEXT32_ALIGNMENT_LEFT 0
GfxText32::GfxText32(SegManager *segMan, GfxCache *fonts, GfxScreen *screen)
: _segMan(segMan), _cache(fonts), _screen(screen) {
}
GfxText32::~GfxText32() {
}
reg_t GfxText32::createTextBitmap(reg_t textObject, uint16 maxWidth, uint16 maxHeight, reg_t prevHunk) {
reg_t stringObject = readSelector(_segMan, textObject, SELECTOR(text));
// The object in the text selector of the item can be either a raw string
// or a Str object. In the latter case, we need to access the object's data
// selector to get the raw string.
if (_segMan->isHeapObject(stringObject))
stringObject = readSelector(_segMan, stringObject, SELECTOR(data));
Common::String text = _segMan->getString(stringObject);
// HACK: The character offsets of the up and down arrow buttons are off by one
// in GK1, for some unknown reason. Fix them here.
if (text.size() == 1 && (text[0] == 29 || text[0] == 30)) {
text.setChar(text[0] + 1, 0);
}
GuiResourceId fontId = readSelectorValue(_segMan, textObject, SELECTOR(font));
GfxFont *font = _cache->getFont(fontId);
bool dimmed = readSelectorValue(_segMan, textObject, SELECTOR(dimmed));
int16 alignment = readSelectorValue(_segMan, textObject, SELECTOR(mode));
uint16 foreColor = readSelectorValue(_segMan, textObject, SELECTOR(fore));
uint16 backColor = readSelectorValue(_segMan, textObject, SELECTOR(back));
Common::Rect nsRect = g_sci->_gfxCompare->getNSRect(textObject);
uint16 width = nsRect.width() + 1;
uint16 height = nsRect.height() + 1;
// Limit rectangle dimensions, if requested
if (maxWidth > 0)
width = maxWidth;
if (maxHeight > 0)
height = maxHeight;
// Upscale the coordinates/width if the fonts are already upscaled
if (_screen->fontIsUpscaled()) {
width = width * _screen->getDisplayWidth() / _screen->getWidth();
height = height * _screen->getDisplayHeight() / _screen->getHeight();
}
int entrySize = width * height + BITMAP_HEADER_SIZE;
reg_t memoryId = NULL_REG;
if (prevHunk.isNull()) {
memoryId = _segMan->allocateHunkEntry("TextBitmap()", entrySize);
writeSelector(_segMan, textObject, SELECTOR(bitmap), memoryId);
} else {
memoryId = prevHunk;
}
byte *memoryPtr = _segMan->getHunkPointer(memoryId);
if (prevHunk.isNull())
memset(memoryPtr, 0, BITMAP_HEADER_SIZE);
byte *bitmap = memoryPtr + BITMAP_HEADER_SIZE;
memset(bitmap, backColor, width * height);
// Save totalWidth, totalHeight
WRITE_LE_UINT16(memoryPtr, width);
WRITE_LE_UINT16(memoryPtr + 2, height);
int16 charCount = 0;
uint16 curX = 0, curY = 0;
const char *txt = text.c_str();
int16 textWidth, textHeight, totalHeight = 0, offsetX = 0, offsetY = 0;
uint16 start = 0;
// Calculate total text height
while (*txt) {
charCount = GetLongest(txt, width, font);
if (charCount == 0)
break;
Width(txt, 0, (int16)strlen(txt), fontId, textWidth, textHeight, true);
totalHeight += textHeight;
txt += charCount;
while (*txt == ' ')
txt++; // skip over breaking spaces
}
txt = text.c_str();
// Draw text in buffer
while (*txt) {
charCount = GetLongest(txt, width, font);
if (charCount == 0)
break;
Width(txt, start, charCount, fontId, textWidth, textHeight, true);
switch (alignment) {
case SCI_TEXT32_ALIGNMENT_RIGHT:
offsetX = width - textWidth;
break;
case SCI_TEXT32_ALIGNMENT_CENTER:
// Center text both horizontally and vertically
offsetX = (width - textWidth) / 2;
offsetY = (height - totalHeight) / 2;
break;
case SCI_TEXT32_ALIGNMENT_LEFT:
offsetX = 0;
break;
default:
warning("Invalid alignment %d used in TextBox()", alignment);
}
for (int i = 0; i < charCount; i++) {
unsigned char curChar = txt[i];
font->drawToBuffer(curChar, curY + offsetY, curX + offsetX, foreColor, dimmed, bitmap, width, height);
curX += font->getCharWidth(curChar);
}
curX = 0;
curY += font->getHeight();
txt += charCount;
while (*txt == ' ')
txt++; // skip over breaking spaces
}
return memoryId;
}
void GfxText32::disposeTextBitmap(reg_t hunkId) {
_segMan->freeHunkEntry(hunkId);
}
void GfxText32::drawTextBitmap(uint16 x, uint16 y, Common::Rect planeRect, reg_t textObject) {
reg_t hunkId = readSelector(_segMan, textObject, SELECTOR(bitmap));
uint16 backColor = readSelectorValue(_segMan, textObject, SELECTOR(back));
// Sanity check: Check if the hunk is set. If not, either the game scripts
// didn't set it, or an old saved game has been loaded, where it wasn't set.
if (hunkId.isNull())
return;
byte *memoryPtr = _segMan->getHunkPointer(hunkId);
if (!memoryPtr)
error("Attempt to draw an invalid text bitmap");
byte *surface = memoryPtr + BITMAP_HEADER_SIZE;
int curByte = 0;
uint16 skipColor = readSelectorValue(_segMan, textObject, SELECTOR(skip));
uint16 textX = planeRect.left + x;
uint16 textY = planeRect.top + y;
// Get totalWidth, totalHeight
uint16 width = READ_LE_UINT16(memoryPtr);
uint16 height = READ_LE_UINT16(memoryPtr + 2);
// Upscale the coordinates/width if the fonts are already upscaled
if (_screen->fontIsUpscaled()) {
textX = textX * _screen->getDisplayWidth() / _screen->getWidth();
textY = textY * _screen->getDisplayHeight() / _screen->getHeight();
}
for (int curY = 0; curY < height; curY++) {
for (int curX = 0; curX < width; curX++) {
byte pixel = surface[curByte++];
if (pixel != skipColor && pixel != backColor)
_screen->putFontPixel(textY, curX + textX, curY, pixel);
}
}
}
int16 GfxText32::GetLongest(const char *text, int16 maxWidth, GfxFont *font) {
uint16 curChar = 0;
int16 maxChars = 0, curCharCount = 0;
uint16 width = 0;
while (width <= maxWidth) {
curChar = (*(const byte *)text++);
switch (curChar) {
// We need to add 0xD, 0xA and 0xD 0xA to curCharCount and then exit
// which means, we split text like
// 'Mature, experienced software analyst available.' 0xD 0xA
// 'Bug installation a proven speciality. "No version too clean."' (normal game text, this is from lsl2)
// and 0xA '-------' 0xA (which is the official sierra subtitle separator)
// Sierra did it the same way.
case 0xD:
// Check, if 0xA is following, if so include it as well
if ((*(const unsigned char *)text) == 0xA)
curCharCount++;
// it's meant to pass through here
case 0xA:
curCharCount++;
// and it's also meant to pass through here
case 0:
return curCharCount;
case ' ':
maxChars = curCharCount; // return count up to (but not including) breaking space
break;
}
if (width + font->getCharWidth(curChar) > maxWidth)
break;
width += font->getCharWidth(curChar);
curCharCount++;
}
return maxChars;
}
void GfxText32::kernelTextSize(const char *text, int16 font, int16 maxWidth, int16 *textWidth, int16 *textHeight) {
Common::Rect rect(0, 0, 0, 0);
Size(rect, text, font, maxWidth);
*textWidth = rect.width();
*textHeight = rect.height();
}
void GfxText32::StringWidth(const char *str, GuiResourceId fontId, int16 &textWidth, int16 &textHeight) {
Width(str, 0, (int16)strlen(str), fontId, textWidth, textHeight, true);
}
void GfxText32::Width(const char *text, int16 from, int16 len, GuiResourceId fontId, int16 &textWidth, int16 &textHeight, bool restoreFont) {
uint16 curChar;
textWidth = 0; textHeight = 0;
GfxFont *font = _cache->getFont(fontId);
if (font) {
text += from;
while (len--) {
curChar = (*(const byte *)text++);
switch (curChar) {
case 0x0A:
case 0x0D:
case 0x9781: // this one is used by SQ4/japanese as line break as well
textHeight = MAX<int16> (textHeight, font->getHeight());
break;
case 0x7C:
warning("Code processing isn't implemented in SCI32");
break;
default:
textHeight = MAX<int16> (textHeight, font->getHeight());
textWidth += font->getCharWidth(curChar);
break;
}
}
}
}
int16 GfxText32::Size(Common::Rect &rect, const char *text, GuiResourceId fontId, int16 maxWidth) {
int16 charCount;
int16 maxTextWidth = 0, textWidth;
int16 totalHeight = 0, textHeight;
rect.top = rect.left = 0;
GfxFont *font = _cache->getFont(fontId);
if (maxWidth < 0) { // force output as single line
StringWidth(text, fontId, textWidth, textHeight);
rect.bottom = textHeight;
rect.right = textWidth;
} else {
// rect.right=found widest line with RTextWidth and GetLongest
// rect.bottom=num. lines * GetPointSize
rect.right = (maxWidth ? maxWidth : 192);
const char *curPos = text;
while (*curPos) {
charCount = GetLongest(curPos, rect.right, font);
if (charCount == 0)
break;
Width(curPos, 0, charCount, fontId, textWidth, textHeight, false);
maxTextWidth = MAX(textWidth, maxTextWidth);
totalHeight += textHeight;
curPos += charCount;
while (*curPos == ' ')
curPos++; // skip over breaking spaces
}
rect.bottom = totalHeight;
rect.right = maxWidth ? maxWidth : MIN(rect.right, maxTextWidth);
}
return rect.right;
}
} // End of namespace Sci
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