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Bug 410114 - "Simplify nsTransform2D" [p=alfredkayser@gmail.com (Alfred Kayser) r+sr=roc a1.9=damons]
This commit is contained in:
reed@reedloden.com
parent
5026ea36ad
commit
70e372f1fb
@ -20,6 +20,7 @@
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* michaelp 09-25-97 1:56pm
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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@ -41,10 +42,6 @@
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#include "gfxCore.h"
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#include "nsCoord.h"
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#define MG_2DIDENTITY 0
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#define MG_2DTRANSLATION 1
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#define MG_2DSCALE 2
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class NS_GFX nsTransform2D
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{
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private:
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@ -61,202 +58,59 @@ private:
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**/
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float m00, m11, m20, m21;
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PRUint16 type;
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public:
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nsTransform2D(void) { SetToIdentity(); }
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nsTransform2D(nsTransform2D *aTransform2D) { SetMatrix(aTransform2D); }
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nsTransform2D(void) { m20 = m21 = 0.0f; m00 = m11 = 1.0f; }
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nsTransform2D(nsTransform2D *aTransform2D) {
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m00 = aTransform2D->m00;
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m11 = aTransform2D->m11;
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m20 = aTransform2D->m20;
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m21 = aTransform2D->m21;
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}
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~nsTransform2D(void) { }
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/**
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* get the type of this transform
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*
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* @param
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* @return type from above set
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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PRUint16 GetType(void) const { return type; }
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/**
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* set this transform to identity
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*
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* @param
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void SetToIdentity(void) { m20 = m21 = 0.0f; m00 = m11 = 1.0f; type = MG_2DIDENTITY; }
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/**
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* set this transform to a scale
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*
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* @param sx, x scale
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* @param sy, y scale
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void SetToScale(float sx, float sy) { m00 = sx; m11 = sy; m20 = m21 = 0.0f; type = MG_2DSCALE; }
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/**
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* set this transform to a translation
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*
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* @param tx, x translation
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* @param ty, y translation
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void SetToTranslate(float tx, float ty) { m00 = m11 = 1.0f; m20 = tx; m21 = ty; type = MG_2DTRANSLATION; }
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void SetToTranslate(float tx, float ty) { m00 = m11 = 1.0f; m20 = tx; m21 = ty; }
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/**
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* get the translation portion of this transform
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*
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* @param pt, Point to return translation values in
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void GetTranslation(float *ptX, float *ptY) const { *ptX = m20; *ptY = m21; }
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void GetTranslationCoord(nscoord *ptX, nscoord *ptY) const { *ptX = NSToCoordRound(m20); *ptY = NSToCoordRound(m21); }
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/**
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* set the translation portion of this transform
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*
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* @param tx, x translation
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* @param ty, y translation
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* @exception
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**/
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void SetTranslation(float tX, float tY) {
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m20 = tX;
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m21 = tY;
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type |= MG_2DTRANSLATION;
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}
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/**
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* get the X translation portion of this transform
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*
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* @param
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* @returns x component of translation
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* @exception
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**/
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float GetXTranslation(void) const { return m20; }
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nscoord GetXTranslationCoord(void) const { return NSToCoordRound(m20); }
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/**
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* get the Y translation portion of this transform
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*
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* @param
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* @returns y component of translation
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* @exception
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**/
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float GetYTranslation(void) const { return m21; }
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nscoord GetYTranslationCoord(void) const { return NSToCoordRound(m21); }
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/**
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* set this matrix and type from another Transform2D
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*
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* @param aTransform2D is the Transform2D to be copied from
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void SetMatrix(nsTransform2D *aTransform2D);
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/**
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* post-multiply a new Transform
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*
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* @param newxform new Transform2D
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void Concatenate(nsTransform2D *newxform);
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/**
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* pre-multiply a new Transform
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*
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* @param newxform new Transform2D
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void PreConcatenate(nsTransform2D *newxform);
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/**
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* apply nontranslation portion of matrix to vector
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*
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* @param pt Point to transform
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void TransformNoXLate(float *ptX, float *ptY) const;
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void TransformNoXLateCoord(nscoord *ptX, nscoord *ptY) const;
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/**
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* apply matrix to vector
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*
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* @param pt Point to transform
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void Transform(float *ptX, float *ptY) const;
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void TransformCoord(nscoord *ptX, nscoord *ptY) const;
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/**
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* apply matrix to rect
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*
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* @param rect Rect to transform
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void Transform(float *aX, float *aY, float *aWidth, float *aHeight) const;
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void TransformCoord(nscoord *aX, nscoord *aY, nscoord *aWidth, nscoord *aHeight) const;
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void TransformNoXLateCoord(nscoord *aX, nscoord *aY, nscoord *aWidth, nscoord *aHeight) const;
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/**
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* Scale an array of X/Y coordinates by the X/Y scale factor in the
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* matrix. The scale is done as if the other coordinate were zero.
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*
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* @param aSrc Base of coordinate input array
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* @param aDst Base of coordinate output array
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* @param aNumCoords Number of coordinates to scale
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*/
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void ScaleXCoords(const nscoord* aSrc, PRUint32 aNumCoords, PRIntn* aDst) const;
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void ScaleYCoords(const nscoord* aSrc, PRUint32 aNumCoords, PRIntn* aDst) const;
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/**
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* add a translation to a Transform via x, y pair
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*
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* @param ptX x value to add as x translation
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* @param ptY y value to add as y translation
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void AddTranslation(float ptX, float ptY);
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/**
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* add a scale to a Transform via x, y pair
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*
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* @param ptX x value to add as x scale
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* @param ptY y value to add as y scale
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* @exception
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* @author michaelp 09-25-97 1:56pm
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**/
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void AddScale(float ptX, float ptY);
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void AddScale(float ptX, float ptY) { m00 *= ptX; m11 *= ptY; }
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};
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#endif
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@ -38,241 +38,10 @@
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#include "nsTransform2D.h"
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void nsTransform2D :: SetMatrix(nsTransform2D *aTransform2D)
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{
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m00 = aTransform2D->m00;
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m11 = aTransform2D->m11;
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m20 = aTransform2D->m20;
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m21 = aTransform2D->m21;
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type = aTransform2D->type;
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}
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void nsTransform2D :: Concatenate(nsTransform2D *newxform)
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{
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PRUint16 newtype = newxform->type;
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if (newtype == MG_2DIDENTITY)
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{
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return;
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}
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else if (type == MG_2DIDENTITY)
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{
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SetMatrix(newxform);
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return;
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}
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else if ((type & MG_2DSCALE) != 0)
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{
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//current matrix is at least scale
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if ((newtype & MG_2DSCALE) != 0)
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{
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//new matrix is scale
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if ((newtype & MG_2DTRANSLATION) != 0)
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{
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m20 += newxform->m20 * m00;
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m21 += newxform->m21 * m11;
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}
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m00 *= newxform->m00;
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m11 *= newxform->m11;
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}
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else
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{
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//new matrix must be translation only
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m20 += newxform->m20 * m00;
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m21 += newxform->m21 * m11;
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}
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}
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else
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{
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//current matrix is translation only
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if ((newtype & MG_2DSCALE) != 0)
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{
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//new matrix is scale
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if ((newtype & MG_2DTRANSLATION) != 0)
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{
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m20 += newxform->m20;
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m21 += newxform->m21;
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}
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m00 = newxform->m00;
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m11 = newxform->m11;
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}
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else
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{
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//new matrix must be translation only
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m20 += newxform->m20;
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m21 += newxform->m21;
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}
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}
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type |= newtype;
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}
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void nsTransform2D :: PreConcatenate(nsTransform2D *newxform)
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{
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float new00 = newxform->m00;
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float new11 = newxform->m11;
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m00 *= new00;
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m11 *= new11;
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m20 = m20 * new00 + newxform->m20;
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m21 = m21 * new11 + newxform->m21;
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type |= newxform->type;
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}
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void nsTransform2D :: TransformNoXLate(float *ptX, float *ptY) const
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{
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if ((type & MG_2DSCALE) != 0) {
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*ptX *= m00;
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*ptY *= m11;
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}
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}
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void nsTransform2D :: TransformNoXLateCoord(nscoord *ptX, nscoord *ptY) const
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{
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if ((type & MG_2DSCALE) != 0) {
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*ptX = NSToCoordRound(*ptX * m00);
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*ptY = NSToCoordRound(*ptY * m11);
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}
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}
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inline PRIntn NSToIntNFloor(float aValue)
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{
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return PRIntn(floor(aValue));
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}
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void nsTransform2D :: ScaleXCoords(const nscoord* aSrc,
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PRUint32 aNumCoords,
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PRIntn* aDst) const
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{
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const nscoord* end = aSrc + aNumCoords;
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if (type == MG_2DIDENTITY){
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while (aSrc < end ) {
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*aDst++ = PRIntn(*aSrc++);
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}
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} else {
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float scale = m00;
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while (aSrc < end) {
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nscoord c = *aSrc++;
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*aDst++ = NSToIntNFloor(c * scale);
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}
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}
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}
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void nsTransform2D :: ScaleYCoords(const nscoord* aSrc,
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PRUint32 aNumCoords,
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PRIntn* aDst) const
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{
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const nscoord* end = aSrc + aNumCoords;
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if (type == MG_2DIDENTITY){
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while (aSrc < end ) {
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*aDst++ = PRIntn(*aSrc++);
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}
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} else {
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float scale = m11;
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while (aSrc < end) {
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nscoord c = *aSrc++;
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*aDst++ = NSToIntNFloor(c * scale);
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}
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}
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}
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void nsTransform2D :: Transform(float *ptX, float *ptY) const
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{
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switch (type)
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{
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case MG_2DIDENTITY:
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break;
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case MG_2DTRANSLATION:
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*ptX += m20;
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*ptY += m21;
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break;
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case MG_2DSCALE:
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*ptX *= m00;
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*ptY *= m11;
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break;
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case MG_2DSCALE | MG_2DTRANSLATION:
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*ptX = *ptX * m00 + m20;
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*ptY = *ptY * m11 + m21;
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break;
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default:
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NS_ASSERTION(0, "illegal type");
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break;
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}
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}
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void nsTransform2D :: TransformCoord(nscoord *ptX, nscoord *ptY) const
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{
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switch (type)
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{
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case MG_2DIDENTITY:
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break;
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case MG_2DTRANSLATION:
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*ptX += NSToCoordRound(m20);
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*ptY += NSToCoordRound(m21);
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break;
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case MG_2DSCALE:
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*ptX = NSToCoordRound(*ptX * m00);
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*ptY = NSToCoordRound(*ptY * m11);
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break;
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case MG_2DSCALE | MG_2DTRANSLATION:
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*ptX = NSToCoordRound(*ptX * m00 + m20);
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*ptY = NSToCoordRound(*ptY * m11 + m21);
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break;
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default:
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NS_ASSERTION(0, "illegal type");
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break;
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}
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}
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void nsTransform2D :: Transform(float *aX, float *aY, float *aWidth, float *aHeight) const
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{
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switch (type)
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{
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case MG_2DIDENTITY:
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break;
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case MG_2DTRANSLATION:
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*aX += m20;
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*aY += m21;
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break;
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case MG_2DSCALE:
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*aX *= m00;
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*aY *= m11;
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*aWidth *= m00;
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*aHeight *= m11;
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break;
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case MG_2DSCALE | MG_2DTRANSLATION:
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*aX = *aX * m00 + m20;
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*aY = *aY * m11 + m21;
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*aWidth *= m00;
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*aHeight *= m11;
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break;
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default:
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NS_ASSERTION(0, "illegal type");
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break;
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}
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*ptX = NSToCoordRound(*ptX * m00 + m20);
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*ptY = NSToCoordRound(*ptY * m11 + m21);
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}
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void nsTransform2D :: TransformCoord(nscoord *aX, nscoord *aY, nscoord *aWidth, nscoord *aHeight) const
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@ -284,50 +53,3 @@ void nsTransform2D :: TransformCoord(nscoord *aX, nscoord *aY, nscoord *aWidth,
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*aWidth = x2 - *aX;
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*aHeight = y2 - *aY;
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}
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void nsTransform2D :: TransformNoXLateCoord(nscoord *aX, nscoord *aY, nscoord *aWidth, nscoord *aHeight) const
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{
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nscoord x2 = *aX + *aWidth;
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nscoord y2 = *aY + *aHeight;
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TransformNoXLateCoord(aX, aY);
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TransformNoXLateCoord(&x2, &y2);
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*aWidth = x2 - *aX;
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*aHeight = y2 - *aY;
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}
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void nsTransform2D :: AddTranslation(float ptX, float ptY)
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{
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if (type == MG_2DIDENTITY)
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{
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m20 = ptX;
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m21 = ptY;
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}
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else if ((type & MG_2DSCALE) != 0)
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{
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m20 += ptX * m00;
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m21 += ptY * m11;
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}
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else
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{
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m20 += ptX;
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m21 += ptY;
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}
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type |= MG_2DTRANSLATION;
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}
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void nsTransform2D :: AddScale(float ptX, float ptY)
|
||||
{
|
||||
if ((type == MG_2DIDENTITY) || (type == MG_2DTRANSLATION))
|
||||
{
|
||||
m00 = ptX;
|
||||
m11 = ptY;
|
||||
}
|
||||
else
|
||||
{
|
||||
m00 *= ptX;
|
||||
m11 *= ptY;
|
||||
}
|
||||
|
||||
type |= MG_2DSCALE;
|
||||
}
|
||||
|
||||
@ -1258,17 +1258,6 @@ nsBulletFrame::GetDesiredSize(nsPresContext* aCX,
|
||||
mComputedSize.width = mIntrinsicSize.width;
|
||||
mComputedSize.height = mIntrinsicSize.height;
|
||||
|
||||
#if 0 // don't do scaled images in bullets
|
||||
if (mComputedSize == mIntrinsicSize) {
|
||||
mTransform.SetToIdentity();
|
||||
} else {
|
||||
if (mComputedSize.width != 0 && mComputedSize.height != 0) {
|
||||
mTransform.SetToScale(float(mIntrinsicSize.width) / float(mComputedSize.width),
|
||||
float(mIntrinsicSize.height) / float(mComputedSize.height));
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
aMetrics.width = mComputedSize.width;
|
||||
aMetrics.ascent = aMetrics.height = mComputedSize.height;
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user