1 files changed, 229 insertions, 0 deletions

diff --git a/inputmethods/dasher/DasherViewSquare.cpp b/inputmethods/dasher/DasherViewSquare.cpp
new file mode 100644
index 0000000..1b12a58
--- a/dev/null
+++ b/inputmethods/dasher/DasherViewSquare.cpp
@@ -0,0 +1,229 @@
+// 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;
+}
+