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"
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#include <algorithm>
using namespace Retro;
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Console *Console::currentInstance = NULL;
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Console::Console(GrafPtr port, Rect r)
: consolePort(port), bounds(r), dirtyRect()
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{
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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;
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()
{
}
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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);
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) };
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()
{
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PortSetter setport(consolePort);
for(short row = 0; row < rows; ++row)
{
for(short col = 0; col < cols; ++col)
{
DrawCell(col, row);
}
}
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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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();
}
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
{
do
{
while(!GetOSEvent(everyEvent, &event))
;
} while(event.what != keyDown && event.what != autoKey);
c = event.message & charCodeMask;
if(c == '\r')
c = '\n';
if(c == '\b')
{
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if(buffer.size())
{
cursorX--;
putch(' ');
cursorX--;
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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}