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// DasherViewSquare.cpp
//
/////////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2001-2002 David Ward
//
/////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////
// DasherViewSquare.cpp: implementation of the DasherViewSquare class.
// Copyright 2002 David Ward
//////////////////////////////////////////////////////////////////////
#include "DasherModel.h"
#include "DasherViewSquare.h"
#include <iostream>
using namespace Dasher;
// ARG! MSVC++ V6 doesn't seem to come with min and max in <algorithm>
#ifdef _MSC_VER
#ifndef max
#define max(a,b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef min
#define min(a,b) (((a) < (b)) ? (a) : (b))
#endif
#else
#include <algorithm>
using std::min;
using std::max;
#endif
CDasherViewSquare::CDasherViewSquare(CDasherScreen* DasherScreen, CDasherModel& DasherModel, Dasher::Opts::ScreenOrientations Orientation)
: CDasherView(DasherScreen, DasherModel, Orientation)
{
ChangeScreen(DasherScreen);
// tweak these if you know what you are doing
m_dXmpa=0.2; // these are for the x non-linearity
m_dXmpb=0.5;
m_dXmpc=0.9;
m_dXmpd=0.5; // slow X movement when accelerating Y
double dY1=0.25; // Amount of acceleration
double dY2=0.95; // Accelerate Y movement below this point
double dY3=0.05; // Accelerate Y movement above this point
m_Y2=int (dY2 * (CDasherView::DasherModel().DasherY()) );
m_Y3=int (dY3 * (CDasherView::DasherModel().DasherY()) );
m_Y1=int(1.0/dY1);
}
int CDasherViewSquare::RenderNode(const symbol Character, const int Color, Opts::ColorSchemes ColorScheme,
myint y1, myint y2, int& mostleft, bool& force, bool text)
{
int top = dashery2screen(y1);
if (top>CanvasY)
return 0;
if (top<0)
top=0;
int bottom = dashery2screen(y2);
if (bottom<0)
return 0;
if (bottom>CanvasY)
bottom=CanvasY;
int height=bottom-top;
if (height==0 && text==true)
force=false;
if (force || height>1) {
force=true;
int left=dasherx2screen(y2-y1);
int right=CanvasX;
int newleft=left, newtop=top, newright=right, newbottom=bottom;
MapScreen(&newleft, &newtop);
MapScreen(&newright, &newbottom);
if( !text )
Screen().DrawRectangle(newleft, newtop, newright, newbottom, Color, ColorScheme);
else
{
if (left<mostleft)
left=mostleft;
int Size;
if (left*Screen().GetFontSize()<CanvasX*19/20) {
Size = 20*Screen().GetFontSize();
} else if (left*Screen().GetFontSize()<CanvasX*159/160) {
Size = 14*Screen().GetFontSize();
} else {
Size = 11*Screen().GetFontSize();
}
int TextWidth, TextHeight, OriginX=0, OriginY=0;
Screen().TextSize(Character, &TextWidth, &TextHeight, Size);
UnMapScreen(&TextWidth, &TextHeight);
UnMapScreen(&OriginX, &OriginY);
int FontHeight = abs(TextHeight-OriginY);
int FontWidth = abs(TextWidth-OriginX);
mostleft = left + FontWidth;
int newleft2 = left;
int newtop2 = (height-FontHeight)/2 + top;
int newright2 = left + FontWidth;
int newbottom2 = (height+FontHeight)/2 + top;
MapScreen(&newleft2, &newtop2);
MapScreen(&newright2, &newbottom2);
newleft = min(newleft2, newright2);
newtop = min(newtop2, newbottom2);
Screen().DrawText(Character, newleft, newtop, Size);
}
return 1;
} else
return 0;
}
void CDasherViewSquare::CheckForNewRoot()
{
CDasherNode * const root=DasherModel().Root();
CDasherNode ** const children=root->Children();
myint y1=DasherModel().Rootmin();
myint y2=DasherModel().Rootmax();
if ((y1>0 || y2 < DasherModel().DasherY() || dasherx2screen(y2-y1)>0) && root->Symbol()!=0) {
DasherModel().Reparent_root(root->Lbnd(),root->Hbnd());
}
if (children==0)
return;
int alive=0;
int theone=0;
unsigned int i;
for (i=1;i<root->Chars();i++) {
if (children[i]->Alive()) {
alive++;
theone=i;
}
}
if (alive==1) {
y1=DasherModel().Rootmin();
y2=DasherModel().Rootmax();
myint range=y2-y1;
myint newy1=y1+(range*children[theone]->Lbnd())/DasherModel().Normalization();
myint newy2=y1+(range*children[theone]->Hbnd())/DasherModel().Normalization();
if (newy1<0 && newy2> DasherModel().DasherY()) {
myint left=dasherx2screen(newy2-newy1);
if (left<0) {
DasherModel().Make_root(theone);
return;
}
}
}
}
// work out the next viewpoint
// move the rectangles accordingly
void CDasherViewSquare::TapOnDisplay(int mousex,int mousey, unsigned long Time)
{
// convert mouse (screen) coords into dasher coords
if (mousex>CanvasX)
mousex=CanvasX;
UnMapScreen(&mousex, &mousey);
screen2dasher(&mousex,&mousey);
DasherModel().Tap_on_display(mousex,mousey, Time);
CheckForNewRoot();
}
void CDasherViewSquare::DrawMouse(int mousex, int mousey)
{
screen2dasher(&mousex,&mousey);
mousex=dasherx2screen(mousex);
mousey=dashery2screen(mousey);
Screen().DrawRectangle(mousex-5, mousey-5, mousex+5, mousey+5, 0, Opts::ColorSchemes(Objects));
}
void CDasherViewSquare::DrawKeyboard()
{
CDasherScreen::point line[2];
line[0].x = 200;
line[0].y = 0;
line[1].x = 200;
line[1].y = CanvasY/2;
Screen().Polyline(line,2);
line[0].x = 200;
line[0].y = CanvasY/2;
line[1].x = 0;
line[1].y = CanvasY/2;
Screen().Polyline(line,2);
line[0].x = 200;
line[0].y = CanvasY/2;
line[1].x = 200;
line[1].y = CanvasY;
Screen().Polyline(line,2);
}
void CDasherViewSquare::ChangeScreen(CDasherScreen* NewScreen)
{
CDasherView::ChangeScreen(NewScreen);
int Width = Screen().GetWidth();
int Height = Screen().GetHeight();
CanvasX=9*Width/10;
CanvasBorder=Width-CanvasX;
CanvasY=Height;
}
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