+++ /dev/null
-/////////////////////////////////////////////////////////////////////////////
-// Name: constrnt.cpp
-// Purpose: OGL Constraint classes
-// Author: Julian Smart
-// Modified by:
-// Created: 12/07/98
-// RCS-ID: $Id$
-// Copyright: (c) Julian Smart
-// Licence: wxWindows licence
-/////////////////////////////////////////////////////////////////////////////
-
-#ifdef __GNUG__
-#pragma implementation "constrnt.h"
-#endif
-
-// For compilers that support precompilation, includes "wx.h".
-#include <wx/wxprec.h>
-
-#ifdef __BORLANDC__
-#pragma hdrstop
-#endif
-
-#ifndef WX_PRECOMP
-#include <wx/wx.h>
-#endif
-
-#include <wx/wxexpr.h>
-
-#include <wx/ogl/basic.h>
-#include <wx/ogl/constrnt.h>
-#include <wx/ogl/canvas.h>
-
-wxList *wxOGLConstraintTypes = NULL;
-
-/*
- * Constraint type
- *
- */
-
-IMPLEMENT_DYNAMIC_CLASS(wxOGLConstraintType, wxObject)
-
-wxOGLConstraintType::wxOGLConstraintType(int theType, const wxString& theName, const wxString& thePhrase)
-{
- m_type = theType;
- m_name = theName;
- m_phrase = thePhrase;
-}
-
-wxOGLConstraintType::~wxOGLConstraintType()
-{
-}
-
-void OGLInitializeConstraintTypes()
-{
- if (!wxOGLConstraintTypes)
- return;
-
- wxOGLConstraintTypes = new wxList(wxKEY_INTEGER);
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_CENTRED_VERTICALLY,
- new wxOGLConstraintType(gyCONSTRAINT_CENTRED_VERTICALLY, "Centre vertically", "centred vertically w.r.t."));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_CENTRED_HORIZONTALLY,
- new wxOGLConstraintType(gyCONSTRAINT_CENTRED_HORIZONTALLY, "Centre horizontally", "centred horizontally w.r.t."));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_CENTRED_BOTH,
- new wxOGLConstraintType(gyCONSTRAINT_CENTRED_BOTH, "Centre", "centred w.r.t."));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_LEFT_OF,
- new wxOGLConstraintType(gyCONSTRAINT_LEFT_OF, "Left of", "left of"));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_RIGHT_OF,
- new wxOGLConstraintType(gyCONSTRAINT_RIGHT_OF, "Right of", "right of"));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_ABOVE,
- new wxOGLConstraintType(gyCONSTRAINT_ABOVE, "Above", "above"));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_BELOW,
- new wxOGLConstraintType(gyCONSTRAINT_BELOW, "Below", "below"));
-
- // Alignment
- wxOGLConstraintTypes->Append(gyCONSTRAINT_ALIGNED_TOP,
- new wxOGLConstraintType(gyCONSTRAINT_ALIGNED_TOP, "Top-aligned", "aligned to the top of"));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_ALIGNED_BOTTOM,
- new wxOGLConstraintType(gyCONSTRAINT_ALIGNED_BOTTOM, "Bottom-aligned", "aligned to the bottom of"));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_ALIGNED_LEFT,
- new wxOGLConstraintType(gyCONSTRAINT_ALIGNED_LEFT, "Left-aligned", "aligned to the left of"));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_ALIGNED_RIGHT,
- new wxOGLConstraintType(gyCONSTRAINT_ALIGNED_RIGHT, "Right-aligned", "aligned to the right of"));
-
- // Mid-alignment
- wxOGLConstraintTypes->Append(gyCONSTRAINT_MIDALIGNED_TOP,
- new wxOGLConstraintType(gyCONSTRAINT_MIDALIGNED_TOP, "Top-midaligned", "centred on the top of"));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_MIDALIGNED_BOTTOM,
- new wxOGLConstraintType(gyCONSTRAINT_MIDALIGNED_BOTTOM, "Bottom-midaligned", "centred on the bottom of"));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_MIDALIGNED_LEFT,
- new wxOGLConstraintType(gyCONSTRAINT_MIDALIGNED_LEFT, "Left-midaligned", "centred on the left of"));
-
- wxOGLConstraintTypes->Append(gyCONSTRAINT_MIDALIGNED_RIGHT,
- new wxOGLConstraintType(gyCONSTRAINT_MIDALIGNED_RIGHT, "Right-midaligned", "centred on the right of"));
-}
-
-void OGLCleanUpConstraintTypes()
-{
- if (!wxOGLConstraintTypes)
- return;
-
- wxNode* node = wxOGLConstraintTypes->First();
- while (node)
- {
- wxOGLConstraintType* ct = (wxOGLConstraintType*) node->Data();
- delete ct;
- node = node->Next();
- }
- delete wxOGLConstraintTypes;
- wxOGLConstraintTypes = NULL;
-}
-
-/*
- * Constraint Stuff
- *
- */
-
-IMPLEMENT_DYNAMIC_CLASS(wxOGLConstraint, wxObject)
-
-wxOGLConstraint::wxOGLConstraint(int type, wxShape *constraining, wxList& constrained)
-{
- m_xSpacing = 0.0;
- m_ySpacing = 0.0;
-
- m_constraintType = type;
- m_constrainingObject = constraining;
-
- m_constraintId = 0;
- m_constraintName = "noname";
-
- wxNode *node = constrained.First();
- while (node)
- {
- m_constrainedObjects.Append(node->Data());
- node = node->Next();
- }
-}
-
-wxOGLConstraint::~wxOGLConstraint()
-{
-}
-
-bool wxOGLConstraint::Equals(double a, double b)
-{
- double marg = 0.5;
-
- bool eq = ((b <= a + marg) && (b >= a - marg));
- return eq;
-}
-
-// Return TRUE if anything changed
-bool wxOGLConstraint::Evaluate()
-{
- double maxWidth, maxHeight, minWidth, minHeight, x, y;
- m_constrainingObject->GetBoundingBoxMax(&maxWidth, &maxHeight);
- m_constrainingObject->GetBoundingBoxMin(&minWidth, &minHeight);
- x = m_constrainingObject->GetX();
- y = m_constrainingObject->GetY();
-
- wxClientDC dc(m_constrainingObject->GetCanvas());
- m_constrainingObject->GetCanvas()->PrepareDC(dc);
-
- switch (m_constraintType)
- {
- case gyCONSTRAINT_CENTRED_VERTICALLY:
- {
- int n = m_constrainedObjects.Number();
- double totalObjectHeight = 0.0;
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
- totalObjectHeight += height2;
- node = node->Next();
- }
- double startY;
- double spacingY;
- // Check if within the constraining object...
- if ((totalObjectHeight + (n + 1)*m_ySpacing) <= minHeight)
- {
- spacingY = (double)((minHeight - totalObjectHeight)/(n + 1));
- startY = (double)(y - (minHeight/2.0));
- }
- // Otherwise, use default spacing
- else
- {
- spacingY = m_ySpacing;
- startY = (double)(y - ((totalObjectHeight + (n+1)*spacingY)/2.0));
- }
-
- // Now position the objects
- bool changed = FALSE;
- node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
- startY += (double)(spacingY + (height2/2.0));
- if (!Equals(startY, constrainedObject->GetY()))
- {
- constrainedObject->Move(dc, constrainedObject->GetX(), startY, FALSE);
- changed = TRUE;
- }
- startY += (double)(height2/2.0);
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_CENTRED_HORIZONTALLY:
- {
- int n = m_constrainedObjects.Number();
- double totalObjectWidth = 0.0;
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
- totalObjectWidth += width2;
- node = node->Next();
- }
- double startX;
- double spacingX;
- // Check if within the constraining object...
- if ((totalObjectWidth + (n + 1)*m_xSpacing) <= minWidth)
- {
- spacingX = (double)((minWidth - totalObjectWidth)/(n + 1));
- startX = (double)(x - (minWidth/2.0));
- }
- // Otherwise, use default spacing
- else
- {
- spacingX = m_xSpacing;
- startX = (double)(x - ((totalObjectWidth + (n+1)*spacingX)/2.0));
- }
-
- // Now position the objects
- bool changed = FALSE;
- node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
- startX += (double)(spacingX + (width2/2.0));
- if (!Equals(startX, constrainedObject->GetX()))
- {
- constrainedObject->Move(dc, startX, constrainedObject->GetY(), FALSE);
- changed = TRUE;
- }
- startX += (double)(width2/2.0);
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_CENTRED_BOTH:
- {
- int n = m_constrainedObjects.Number();
- double totalObjectWidth = 0.0;
- double totalObjectHeight = 0.0;
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
- totalObjectWidth += width2;
- totalObjectHeight += height2;
- node = node->Next();
- }
- double startX;
- double spacingX;
- double startY;
- double spacingY;
-
- // Check if within the constraining object...
- if ((totalObjectWidth + (n + 1)*m_xSpacing) <= minWidth)
- {
- spacingX = (double)((minWidth - totalObjectWidth)/(n + 1));
- startX = (double)(x - (minWidth/2.0));
- }
- // Otherwise, use default spacing
- else
- {
- spacingX = m_xSpacing;
- startX = (double)(x - ((totalObjectWidth + (n+1)*spacingX)/2.0));
- }
-
- // Check if within the constraining object...
- if ((totalObjectHeight + (n + 1)*m_ySpacing) <= minHeight)
- {
- spacingY = (double)((minHeight - totalObjectHeight)/(n + 1));
- startY = (double)(y - (minHeight/2.0));
- }
- // Otherwise, use default spacing
- else
- {
- spacingY = m_ySpacing;
- startY = (double)(y - ((totalObjectHeight + (n+1)*spacingY)/2.0));
- }
-
- // Now position the objects
- bool changed = FALSE;
- node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
- startX += (double)(spacingX + (width2/2.0));
- startY += (double)(spacingY + (height2/2.0));
-
- if ((!Equals(startX, constrainedObject->GetX())) || (!Equals(startY, constrainedObject->GetY())))
- {
- constrainedObject->Move(dc, startX, startY, FALSE);
- changed = TRUE;
- }
-
- startX += (double)(width2/2.0);
- startY += (double)(height2/2.0);
-
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_LEFT_OF:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
-
- double x3 = (double)(x - (minWidth/2.0) - (width2/2.0) - m_xSpacing);
- if (!Equals(x3, constrainedObject->GetX()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, x3, constrainedObject->GetY(), FALSE);
- }
-
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_RIGHT_OF:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
-
- double x3 = (double)(x + (minWidth/2.0) + (width2/2.0) + m_xSpacing);
- if (!Equals(x3, constrainedObject->GetX()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, x3, constrainedObject->GetY(), FALSE);
- }
-
- node = node->Next();
- }
- return changed;
-
- return FALSE;
- }
- case gyCONSTRAINT_ABOVE:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
-
- double y3 = (double)(y - (minHeight/2.0) - (height2/2.0) - m_ySpacing);
- if (!Equals(y3, constrainedObject->GetY()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, constrainedObject->GetX(), y3, FALSE);
- }
-
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_BELOW:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
-
- double y3 = (double)(y + (minHeight/2.0) + (height2/2.0) + m_ySpacing);
- if (!Equals(y3, constrainedObject->GetY()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, constrainedObject->GetX(), y3, FALSE);
- }
-
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_ALIGNED_LEFT:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
-
- double x3 = (double)(x - (minWidth/2.0) + (width2/2.0) + m_xSpacing);
- if (!Equals(x3, constrainedObject->GetX()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, x3, constrainedObject->GetY(), FALSE);
- }
-
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_ALIGNED_RIGHT:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
-
- double x3 = (double)(x + (minWidth/2.0) - (width2/2.0) - m_xSpacing);
- if (!Equals(x3, constrainedObject->GetX()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, x3, constrainedObject->GetY(), FALSE);
- }
-
- node = node->Next();
- }
- return changed;
-
- return FALSE;
- }
- case gyCONSTRAINT_ALIGNED_TOP:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
-
- double y3 = (double)(y - (minHeight/2.0) + (height2/2.0) + m_ySpacing);
- if (!Equals(y3, constrainedObject->GetY()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, constrainedObject->GetX(), y3, FALSE);
- }
-
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_ALIGNED_BOTTOM:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double width2, height2;
- constrainedObject->GetBoundingBoxMax(&width2, &height2);
-
- double y3 = (double)(y + (minHeight/2.0) - (height2/2.0) - m_ySpacing);
- if (!Equals(y3, constrainedObject->GetY()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, constrainedObject->GetX(), y3, FALSE);
- }
-
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_MIDALIGNED_LEFT:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double x3 = (double)(x - (minWidth/2.0));
- if (!Equals(x3, constrainedObject->GetX()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, x3, constrainedObject->GetY(), FALSE);
- }
-
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_MIDALIGNED_RIGHT:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double x3 = (double)(x + (minWidth/2.0));
- if (!Equals(x3, constrainedObject->GetX()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, x3, constrainedObject->GetY(), FALSE);
- }
-
- node = node->Next();
- }
- return changed;
-
- return FALSE;
- }
- case gyCONSTRAINT_MIDALIGNED_TOP:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double y3 = (double)(y - (minHeight/2.0));
- if (!Equals(y3, constrainedObject->GetY()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, constrainedObject->GetX(), y3, FALSE);
- }
-
- node = node->Next();
- }
- return changed;
- }
- case gyCONSTRAINT_MIDALIGNED_BOTTOM:
- {
- bool changed = FALSE;
-
- wxNode *node = m_constrainedObjects.First();
- while (node)
- {
- wxShape *constrainedObject = (wxShape *)node->Data();
-
- double y3 = (double)(y + (minHeight/2.0));
- if (!Equals(y3, constrainedObject->GetY()))
- {
- changed = TRUE;
- constrainedObject->Move(dc, constrainedObject->GetX(), y3, FALSE);
- }
-
- node = node->Next();
- }
- return changed;
- }
-
- default:
- return FALSE;
- }
- return FALSE;
-}
-
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