]> git.saurik.com Git - wxWidgets.git/blobdiff - src/common/dcbase.cpp
[ 1509599 ] 'Split pickers page in widgets sample' with more icons and rebaking.
[wxWidgets.git] / src / common / dcbase.cpp
index fadb078d01ba56eaa8703cbc3436937a31aeb167..ef8918bbb5e514879a1777bb9118da893497f3b3 100644 (file)
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        common/dcbase.cpp
+// Name:        src/common/dcbase.cpp
 // Purpose:     generic methods of the wxDC Class
 // Author:      Vadim Zeitlin
 // Modified by:
 // declarations
 // ============================================================================
 
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation "dcbase.h"
-#endif
-
 // ----------------------------------------------------------------------------
 // headers
 // ----------------------------------------------------------------------------
 
 #include "wx/dc.h"
 
-#include <math.h>
+#ifndef WX_PRECOMP
+    #include "wx/math.h"
+#endif
 
 // bool wxDCBase::sm_cacheing = false;
 
+IMPLEMENT_ABSTRACT_CLASS(wxDCBase, wxObject)
+
 // ============================================================================
 // implementation
 // ============================================================================
 
+#if WXWIN_COMPATIBILITY_2_6
+void wxDCBase::BeginDrawing()
+{
+}
+
+void wxDCBase::EndDrawing()
+{
+}
+#endif // WXWIN_COMPATIBILITY_2_6
+
 // ----------------------------------------------------------------------------
 // special symbols
 // ----------------------------------------------------------------------------
@@ -316,10 +326,10 @@ void wxDCBase::DoDrawSpline( wxList *points )
     double           x1, y1, x2, y2;
 
     wxList::compatibility_iterator node = points->GetFirst();
-    if (node == NULL)
+    if (node == wxList::compatibility_iterator())
         // empty list
         return;
-    
+
     p = (wxPoint *)node->GetData();
 
     x1 = p->x;
@@ -375,7 +385,7 @@ void wxDCBase::DoDrawSpline( wxList *points )
 
 
 // Each element of the widths array will be the width of the string up to and
-// including the coresponding character in text.  This is the generic
+// including the corresponding character in text.  This is the generic
 // implementation, the port-specific classes should do this with native APIs
 // if available and if faster.  Note: pango_layout_index_to_pos is much slower
 // than calling GetTextExtent!!
@@ -407,15 +417,14 @@ bool wxDCBase::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths)
 {
     int totalWidth = 0;
 
-    size_t i, len = text.Length();
+    const size_t len = text.length();
     widths.Empty();
     widths.Add(0, len);
-    int w, h;
 
     // reset the cache if font or horizontal scale have changed
-    if (!s_fontWidthCache.m_widths ||
-        (s_fontWidthCache.m_scaleX != m_scaleX) ||
-        (s_fontWidthCache.m_font != GetFont()))
+    if ( !s_fontWidthCache.m_widths ||
+         !wxIsSameDouble(s_fontWidthCache.m_scaleX, m_scaleX) ||
+         (s_fontWidthCache.m_font != GetFont()) )
     {
         s_fontWidthCache.Reset();
         s_fontWidthCache.m_font = GetFont();
@@ -424,7 +433,8 @@ bool wxDCBase::DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths)
 
     // Calculate the position of each character based on the widths of
     // the previous characters
-    for (i=0; i<len; i++)
+    int w, h;
+    for ( size_t i = 0; i < len; i++ )
     {
         const wxChar c = text[i];
         unsigned int c_int = (unsigned int)c;
@@ -675,6 +685,156 @@ void wxDCBase::DrawLabel(const wxString& text,
     CalcBoundingBox(x0 + width0, y0 + height);
 }
 
+
+void wxDCBase::DoGradientFillLinear(const wxRect& rect,
+                                    const wxColour& initialColour,
+                                    const wxColour& destColour,
+                                    wxDirection nDirection)
+{
+    // save old pen
+    wxPen oldPen = m_pen;
+
+    wxUint8 nR1 = destColour.Red();
+    wxUint8 nG1 = destColour.Green();
+    wxUint8 nB1 = destColour.Blue();
+    wxUint8 nR2 = initialColour.Red();
+    wxUint8 nG2 = initialColour.Green();
+    wxUint8 nB2 = initialColour.Blue();
+    wxUint8 nR, nG, nB;
+
+    if ( nDirection == wxEAST || nDirection == wxWEST )
+    {
+        wxInt32 x = rect.GetWidth();
+        wxInt32 w = x;              // width of area to shade
+        wxInt32 xDelta = w/256;     // height of one shade bend
+        if (xDelta < 1)
+            xDelta = 1;
+
+        while (x >= xDelta)
+        {
+            x -= xDelta;
+            if (nR1 > nR2)
+                nR = nR1 - (nR1-nR2)*(w-x)/w;
+            else
+                nR = nR1 + (nR2-nR1)*(w-x)/w;
+
+            if (nG1 > nG2)
+                nG = nG1 - (nG1-nG2)*(w-x)/w;
+            else
+                nG = nG1 + (nG2-nG1)*(w-x)/w;
+
+            if (nB1 > nB2)
+                nB = nB1 - (nB1-nB2)*(w-x)/w;
+            else
+                nB = nB1 + (nB2-nB1)*(w-x)/w;
+
+            SetPen(wxPen(wxColour(nR, nG, nB), 1, wxSOLID));
+            if(nDirection == wxEAST)
+                DrawRectangle(rect.GetLeft()+x, rect.GetTop(),
+                        xDelta, rect.GetHeight());
+            else //nDirection == wxWEST
+                DrawRectangle(rect.GetRight()-x-xDelta, rect.GetTop(),
+                        xDelta, rect.GetHeight());
+        }
+    }
+    else  // nDirection == wxNORTH || nDirection == wxSOUTH
+    {
+        wxInt32 y = rect.GetHeight();
+        wxInt32 w = y;              // height of area to shade
+        wxInt32 yDelta = w/255;     // height of one shade bend
+        if (yDelta < 1)
+            yDelta = 1;
+
+        while (y > 0)
+        {
+            y -= yDelta;
+            if (nR1 > nR2)
+                nR = nR1 - (nR1-nR2)*(w-y)/w;
+            else
+                nR = nR1 + (nR2-nR1)*(w-y)/w;
+
+            if (nG1 > nG2)
+                nG = nG1 - (nG1-nG2)*(w-y)/w;
+            else
+                nG = nG1 + (nG2-nG1)*(w-y)/w;
+
+            if (nB1 > nB2)
+                nB = nB1 - (nB1-nB2)*(w-y)/w;
+            else
+                nB = nB1 + (nB2-nB1)*(w-y)/w;
+
+            SetPen(wxPen(wxColour(nR, nG, nB), 1, wxSOLID));
+            if(nDirection == wxNORTH)
+                DrawRectangle(rect.GetLeft(), rect.GetTop()+y,
+                        rect.GetWidth(), yDelta);
+            else //nDirection == wxSOUTH
+                DrawRectangle(rect.GetLeft(), rect.GetBottom()-y-yDelta,
+                        rect.GetWidth(), yDelta);
+        }
+    }
+
+    SetPen(oldPen);
+}
+
+void wxDCBase::GradientFillConcentric(const wxRect& rect,
+                                      const wxColour& initialColour,
+                                      const wxColour& destColour,
+                                      const wxPoint& circleCenter)
+{
+    //save the old pen color
+    wxColour oldPenColour = m_pen.GetColour();
+
+    wxUint8 nR1 = destColour.Red();
+    wxUint8 nG1 = destColour.Green();
+    wxUint8 nB1 = destColour.Blue();
+    wxUint8 nR2 = initialColour.Red();
+    wxUint8 nG2 = initialColour.Green();
+    wxUint8 nB2 = initialColour.Blue();
+    wxUint8 nR, nG, nB;
+
+
+    //Radius
+    wxInt32 cx = rect.GetWidth() / 2;
+    wxInt32 cy = rect.GetHeight() / 2;
+    wxInt32 nRadius;
+    if (cx < cy)
+        nRadius = cx;
+    else
+        nRadius = cy;
+
+    //Offset of circle
+    wxInt32 nCircleOffX = circleCenter.x - (rect.GetWidth() / 2);
+    wxInt32 nCircleOffY = circleCenter.y - (rect.GetHeight() / 2);
+
+    for ( wxInt32 x = 0; x < rect.GetWidth(); x++ )
+    {
+        for ( wxInt32 y = 0; y < rect.GetHeight(); y++ )
+        {
+            //get color difference
+            wxInt32 nGradient = ((nRadius -
+                                  (wxInt32)sqrt(
+                                    pow((double)(x - cx - nCircleOffX), 2) +
+                                    pow((double)(y - cy - nCircleOffY), 2)
+                                  )) * 100) / nRadius;
+
+            //normalize Gradient
+            if (nGradient < 0 )
+                nGradient = 0;
+
+            //get dest colors
+            nR = (wxUint8)(nR1 + ((nR2 - nR1) * nGradient / 100));
+            nG = (wxUint8)(nG1 + ((nG2 - nG1) * nGradient / 100));
+            nB = (wxUint8)(nB1 + ((nB2 - nB1) * nGradient / 100));
+
+            //set the pixel
+            m_pen.SetColour(wxColour(nR,nG,nB));
+            DrawPoint(wxPoint(x + rect.GetLeft(), y + rect.GetTop()));
+        }
+    }
+    //return old pen color
+    m_pen.SetColour(oldPenColour);
+}
+
 /*
 Notes for wxWidgets DrawEllipticArcRot(...)
 
@@ -730,13 +890,13 @@ void wxDCBase::DoDrawEllipticArcRot( wxCoord x, wxCoord y,
     list.Append( (wxObject*) new wxPoint( x+w/2, y+h/2 ) );
 
     // copy list into array and delete list elements
-    int n = list.Number();
+    int n = list.GetCount();
     wxPoint *points = new wxPoint[n];
     int i = 0;
     wxNode* node = 0;
-    for ( node = list.First(); node; node = node->Next(), i++ )
+    for ( node = list.GetFirst(); node; node = node->GetNext(), i++ )
     {
-        wxPoint *point = (wxPoint *)node->Data();
+        wxPoint *point = (wxPoint *)node->GetData();
         points[i].x = point->x;
         points[i].y = point->y;
         delete point;
@@ -766,12 +926,12 @@ void wxDCBase::Rotate( wxList* points, double angle, wxPoint center )
 {
     if( angle != 0.0 )
     {
-        double pi(3.1415926536);
+        double pi(M_PI);
         double dSinA = -sin(angle*2.0*pi/360.0);
         double dCosA = cos(angle*2.0*pi/360.0);
-        for ( wxNode* node = points->First(); node; node = node->Next() )
+        for ( wxNode* node = points->GetFirst(); node; node = node->GetNext() )
         {
-            wxPoint* point = (wxPoint*)node->Data();
+            wxPoint* point = (wxPoint*)node->GetData();
 
             // transform coordinates, if necessary
             if( center.x ) point->x -= center.x;
@@ -794,7 +954,7 @@ void wxDCBase::CalculateEllipticPoints( wxList* points,
                                         wxCoord w, wxCoord h,
                                         double sa, double ea )
 {
-    double pi = 3.1415926535;
+    double pi = M_PI;
     double sar = 0;
     double ear = 0;
     int xsa = 0;
@@ -907,14 +1067,14 @@ void wxDCBase::CalculateEllipticPoints( wxList* points,
         bool bForceTurn = ( sq == eq && sa > ea );
         while( !bReady )
         {
-            for( wxNode *node = pointsarray[q].First(); node; node = node->Next() )
+            for( wxNode *node = pointsarray[q].GetFirst(); node; node = node->GetNext() )
             {
                 // once: go to starting point in start quadrant
                 if( !bStarted &&
                     (
-                      ( (wxPoint*) node->Data() )->x < xsa+1 && q <= 1
+                      ( (wxPoint*) node->GetData() )->x < xsa+1 && q <= 1
                       ||
-                      ( (wxPoint*) node->Data() )->x > xsa-1 && q >= 2
+                      ( (wxPoint*) node->GetData() )->x > xsa-1 && q >= 2
                     )
                   )
                 {
@@ -926,16 +1086,16 @@ void wxDCBase::CalculateEllipticPoints( wxList* points,
                 {
                     if( q != eq || bForceTurn
                         ||
-                        ( (wxPoint*) node->Data() )->x > xea+1 && q <= 1
+                        ( (wxPoint*) node->GetData() )->x > xea+1 && q <= 1
                         ||
-                        ( (wxPoint*) node->Data() )->x < xea-1 && q >= 2
+                        ( (wxPoint*) node->GetData() )->x < xea-1 && q >= 2
                       )
                     {
                         // copy point
-                        wxPoint* pPoint = new wxPoint( *((wxPoint*) node->Data() ) );
+                        wxPoint* pPoint = new wxPoint( *((wxPoint*) node->GetData() ) );
                         points->Append( (wxObject*) pPoint );
                     }
-                    else if( q == eq && !bForceTurn || ( (wxPoint*) node->Data() )->x == xea)
+                    else if( q == eq && !bForceTurn || ( (wxPoint*) node->GetData() )->x == xea)
                     {
                         bReady = true;
                     }
@@ -951,38 +1111,38 @@ void wxDCBase::CalculateEllipticPoints( wxList* points,
         // delete points
         for( q = 0; q < 4; ++q )
         {
-            for( wxNode *node = pointsarray[q].First(); node; node = node->Next() )
+            for( wxNode *node = pointsarray[q].GetFirst(); node; node = node->GetNext() )
             {
-                wxPoint *p = (wxPoint *)node->Data();
+                wxPoint *p = (wxPoint *)node->GetData();
                 delete p;
             }
         }
     }
     else
     {
+        wxNode* node;
         // copy whole ellipse, wxPoints will be deleted outside
-        for( wxNode *node = pointsarray[0].First(); node; node = node->Next() )
+        for( node = pointsarray[0].GetFirst(); node; node = node->GetNext() )
         {
-            wxObject *p = node->Data();
+            wxObject *p = node->GetData();
             points->Append( p );
         }
-        for( node = pointsarray[1].First(); node; node = node->Next() )
+        for( node = pointsarray[1].GetFirst(); node; node = node->GetNext() )
         {
-            wxObject *p = node->Data();
+            wxObject *p = node->GetData();
             points->Append( p );
         }
-        for( node = pointsarray[2].First(); node; node = node->Next() )
+        for( node = pointsarray[2].GetFirst(); node; node = node->GetNext() )
         {
-            wxObject *p = node->Data();
+            wxObject *p = node->GetData();
             points->Append( p );
         }
-        for( node = pointsarray[3].First(); node; node = node->Next() )
+        for( node = pointsarray[3].GetFirst(); node; node = node->GetNext() )
         {
-            wxObject *p = node->Data();
+            wxObject *p = node->GetData();
             points->Append( p );
         }
     } // not iUseAngles
 } // CalculateEllipticPoints
 
 #endif
-