Retro68/Console/Console.cc

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/*
Copyright 2012 Wolfgang Thaller.
This file is part of Retro68.
Retro68 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.
Retro68 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 Retro68. If not, see <http://www.gnu.org/licenses/>.
*/
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#include "Console.h"
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#include "MacUtils.h"
#include "Events.h"
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#include "Fonts.h"
#include "Processes.h"
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#include <algorithm>
using namespace Retro;
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Console *Console::currentInstance = NULL;
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Console::Console()
: consolePort(NULL), dirtyRect(),
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blinkTicks(0), cursorDrawn(false), cursorVisible(true)
{
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}
void Console::Init(GrafPtr port, Rect r)
{
consolePort = port;
bounds = r;
if(currentInstance == NULL)
currentInstance = (Console*) -1;
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PortSetter setport(consolePort);
InsetRect(&bounds, 2,2);
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TextFont(kFontIDMonaco);
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TextSize(9);
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cellSizeY = 12;
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cellSizeX = CharWidth('M');
rows = (bounds.bottom - bounds.top) / cellSizeY;
cols = (bounds.right - bounds.left) / cellSizeX;
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chars = std::vector<char>(rows*cols, ' ');
onscreen = chars;
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cursorX = cursorY = 0;
currentInstance = this;
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}
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Console::Console(GrafPtr port, Rect r)
: consolePort(NULL), dirtyRect(),
blinkTicks(0), cursorDrawn(false), cursorVisible(true)
{
Init(port, r);
}
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Console::~Console()
{
}
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Rect Console::CellRect(short x, short y)
{
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return { (short) (bounds.top + y * cellSizeY), (short) (bounds.left + x * cellSizeX),
(short) (bounds.top + (y+1) * cellSizeY), (short) (bounds.left + (x+1) * cellSizeX) };
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}
void Console::DrawCell(short x, short y, bool erase)
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{
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Rect r = CellRect(x,y);
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if(cursorDrawn)
{
if(y == cursorY && x == cursorX)
{
erase = true;
cursorDrawn = false;
}
}
if(erase)
EraseRect(&r);
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MoveTo(r.left, r.bottom - 2);
DrawChar(chars[y * cols + x]);
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}
void Console::DrawCells(short x1, short x2, short y, bool erase)
{
Rect r = { (short) (bounds.top + y * cellSizeY), (short) (bounds.left + x1 * cellSizeX),
(short) (bounds.top + (y+1) * cellSizeY), (short) (bounds.left + x2 * cellSizeX) };
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if(cursorDrawn)
{
if(y == cursorY && x1 <= cursorX && x2 > cursorX)
{
erase = true;
cursorDrawn = false;
}
}
if(erase)
EraseRect(&r);
MoveTo(r.left, r.bottom - 2);
DrawText(&chars[y * cols + x1], 0, x2 - x1);
}
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void Console::Draw(Rect r)
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{
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PortSetter setport(consolePort);
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short minRow = std::max(0, (r.top - bounds.top) / cellSizeY);
short maxRow = std::min((int)rows, (r.bottom - bounds.top + cellSizeY - 1) / cellSizeY);
short minCol = std::max(0, (r.left - bounds.left) / cellSizeX);
short maxCol = std::min((int)cols, (r.right - bounds.left + cellSizeX - 1) / cellSizeX);
EraseRect(&r);
for(short row = minRow; row < maxRow; ++row)
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{
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DrawCells(minCol, maxCol, row, false);
}
if(cursorDrawn)
{
Rect cursor = CellRect(cursorX, cursorY);
InvertRect(&cursor);
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}
onscreen = chars;
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}
void Console::ScrollUp(short n)
{
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cursorY--;
std::copy(chars.begin() + cols, chars.end(), chars.begin());
std::fill(chars.end() - cols, chars.end(), ' ');
std::copy(onscreen.begin() + cols, onscreen.end(), onscreen.begin());
std::fill(onscreen.end() - cols, onscreen.end(), ' ');
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RgnHandle rgn = NewRgn();
ScrollRect(&bounds, 0, -cellSizeY, rgn);
DisposeRgn(rgn);
dirtyRect.top = dirtyRect.top > 0 ? dirtyRect.top - 1 : 0;
dirtyRect.bottom = dirtyRect.bottom > 0 ? dirtyRect.bottom - 1 : 0;
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}
void Console::PutCharNoUpdate(char c)
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{
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InvalidateCursor();
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switch(c)
{
case '\r':
cursorX = 0;
break;
case '\n':
cursorY++;
cursorX = 0;
if(cursorY >= rows)
ScrollUp();
break;
default:
chars[cursorY * cols + cursorX] = c;
if(dirtyRect.right == 0)
{
dirtyRect.right = (dirtyRect.left = cursorX) + 1;
dirtyRect.bottom = (dirtyRect.top = cursorY) + 1;
}
else
{
dirtyRect.left = std::min(dirtyRect.left, cursorX);
dirtyRect.top = std::min(dirtyRect.top, cursorY);
dirtyRect.right = std::max(dirtyRect.right, short(cursorX + 1));
dirtyRect.bottom = std::max(dirtyRect.bottom, short(cursorY + 1));
}
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cursorX++;
if(cursorX >= cols)
PutCharNoUpdate('\n');
}
}
void Console::Update()
{
PortSetter setport(consolePort);
for(short row = dirtyRect.top; row < dirtyRect.bottom; ++row)
{
short start = -1;
bool needclear = false;
for(short col = dirtyRect.left; col < dirtyRect.right; ++col)
{
char old = onscreen[row * cols + col];
if(chars[row * cols + col] != old)
{
if(start == -1)
start = col;
if(old != ' ')
needclear = true;
onscreen[row * cols + col] = chars[row * cols + col];
}
else
{
if(start != -1)
DrawCells(start, col, row, needclear);
start = -1;
needclear = false;
}
}
if(start != -1)
DrawCells(start, dirtyRect.right, row, needclear);
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}
dirtyRect = Rect();
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if(cursorVisible != cursorDrawn)
{
Rect r = CellRect(cursorX, cursorY);
if(cursorDrawn)
DrawCell(cursorX, cursorY, true);
else
InvertRect(&r);
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cursorDrawn = !cursorDrawn;
}
#if TARGET_API_MAC_CARBON
QDFlushPortBuffer(consolePort,NULL);
#endif
}
void Console::putch(char c)
{
PutCharNoUpdate(c);
Update();
}
void Console::write(const char *p, int n)
{
for(int i = 0; i < n; i++)
Console::currentInstance->PutCharNoUpdate(*p++);
Update();
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}
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std::string Console::ReadLine()
{
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std::string buffer;
EventRecord event;
char c;
do
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{
c = WaitNextChar();
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if(c == '\r')
c = '\n';
if(c == '\b')
{
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if(buffer.size())
{
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InvalidateCursor();
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cursorX--;
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PutCharNoUpdate(' ');
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cursorX--;
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Update();
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buffer.resize(buffer.size()-1);
}
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continue;
}
putch(c);
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buffer.append(1,c);
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} while(c != '\n');
return buffer;
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}
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void Console::InvalidateCursor()
{
if(cursorDrawn)
{
PortSetter setport(consolePort);
DrawCell(cursorX, cursorY, true);
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cursorDrawn = false;
}
}
void Console::Idle()
{
long ticks = TickCount();
if(ticks - blinkTicks > 60)
{
cursorVisible = !cursorVisible;
blinkTicks = ticks;
Update();
}
}
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void Console::Reshape(Rect newBounds)
{
InsetRect(&newBounds, 2,2);
bounds = newBounds;
short newRows = (bounds.bottom - bounds.top) / cellSizeY;
short newCols = (bounds.right - bounds.left) / cellSizeX;
short upshift = 0;
if(cursorY >= newRows)
{
upshift = cursorY - (newRows - 1);
InvalidateCursor();
cursorY = newRows - 1;
}
std::vector<char> newChars(newRows*newCols, ' ');
for(short row = 0; row < newRows && row + upshift < rows; row++)
{
char *src = &chars[(row+upshift) * cols];
char *dst = &newChars[row * newCols];
std::copy(src, src + std::min(cols, newCols), dst);
}
chars.swap(newChars);
/*newChars = std::vector<char>(newRows*newCols, ' ');
for(short row = 0; row < newRows && row < rows; row++)
{
char *src = &chars[row * cols];
char *dst = &newChars[row * newCols];
std::copy(src, src + std::min(cols, newCols), dst);
}
onscreen.swap(newChars);*/
onscreen = newChars;
rows = newRows;
cols = newCols;
if(upshift)
{
//dirtyRect = Rect { 0, 0, rows, cols };
//Update();
Draw();
}
}