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IDProjectCategoryView StatusDate SubmittedLast Update
0017332ScribusGeneralpublic2024-12-09 20:562024-12-10 20:27
Reporternitramr Assigned To 
PrioritynormalSeverityminorReproducibilityalways
Status newResolutionopen 
PlatformDesktop PCOSUbuntuOS Version24.10 64-bit
Product Version1.6.2 
Target Version1.6.3.svn 
Summary0017332: Change from Conical gradient to mesh Gradient generate new color names
DescriptionObject gradient conversion from conical to mesh create some non-existing color names, e.g. from Back => BlackBlack0.75.


<MPoint GX=\"0\" GY=\"0\" CTX=\"0\" CTY=\"0\" CBX=\"0\" CBY=\"0\" CLX=\"0\" CLY=\"0\" CRX=\"0\" CRY=\"0\" CCX=\"0\" CCY=\"0\" NAME=\"Black\" SHADE=\"100\" TRANS=\"1\"/>\n
<MPoint GX=\"0\" GY=\"0\" CTX=\"0\" CTY=\"0\" CBX=\"0\" CBY=\"0\" CLX=\"0\" CLY=\"0\" CRX=\"0\" CRY=\"0\" CCX=\"0\" CCY=\"0\" NAME=\"BlackBlack0.25\" SHADE=\"100\" TRANS=\"1\"/>\n
<MPoint GX=\"0\" GY=\"0\" CTX=\"0\" CTY=\"0\" CBX=\"0\" CBY=\"0\" CLX=\"0\" CLY=\"0\" CRX=\"0\" CRY=\"0\" CCX=\"0\" CCY=\"0\" NAME=\"BlackBlack0.5\" SHADE=\"100\" TRANS=\"1\"/>\n
<MPoint GX=\"0\" GY=\"0\" CTX=\"0\" CTY=\"0\" CBX=\"0\" CBY=\"0\" CLX=\"0\" CLY=\"0\" CRX=\"0\" CRY=\"0\" CCX=\"0\" CCY=\"0\" NAME=\"BlackBlack0.75\" SHADE=\"100\" TRANS=\"1\"/>\n
<MPoint GX=\"0\" GY=\"0\" CTX=\"0\" CTY=\"0\" CBX=\"0\" CBY=\"0\" CLX=\"0\" CLY=\"0\" CRX=\"0\" CRY=\"0\" CCX=\"0\" CCY=\"0\" NAME=\"Black\" SHADE=\"100\" TRANS=\"1\"/>\n

Issues comes from VColorStop PageItem::computeInBetweenStop
Some intermediate color steps are created for the conical gradient that are not added as true new colors when converted to a mesh gradient.
Steps To Reproduce1. Create a new shape, e.g. rectangle
2. Fill object with conical gradient (keep colors as they are)
3. Change conical gradient to mesh
-> issue is not rendered but when you copy and paste the element you see a brown color instead of black. You will see the issue too when you save and open the document.
TagsNo tags attached.
PatchNo

Activities

nitramr

2024-12-09 20:56

developer  

Document-1.sla (19,825 bytes)    
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        <COLOR NAME="BlackBlack0.5" SPACE="RGB" R="153" G="102" B="51"/>
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            <MPoint GX="222.260869565217" GY="0" CTX="222.260869565217" CTY="0" CBX="222.260869565217" CBY="0" CLX="222.260869565217" CLY="-122.751288738157" CRX="222.260869565217" CRY="0" CCX="222.260869565217" CCY="0" NAME="Black" SHADE="100" TRANS="1"/>
            <MPoint GX="0" GY="0" CTX="0" CTY="0" CBX="0" CBY="0" CLX="0" CLY="0" CRX="0" CRY="0" CCX="0" CCY="0" NAME="Black" SHADE="100" TRANS="1"/>
            <MPoint GX="0" GY="0" CTX="0" CTY="0" CBX="0" CBY="0" CLX="0" CLY="0" CRX="0" CRY="0" CCX="0" CCY="0" NAME="BlackBlack0.25" SHADE="100" TRANS="1"/>
            <MPoint GX="0" GY="0" CTX="0" CTY="0" CBX="0" CBY="0" CLX="0" CLY="0" CRX="0" CRY="0" CCX="0" CCY="0" NAME="BlackBlack0.5" SHADE="100" TRANS="1"/>
            <MPoint GX="0" GY="0" CTX="0" CTY="0" CBX="0" CBY="0" CLX="0" CLY="0" CRX="0" CRY="0" CCX="0" CCY="0" NAME="BlackBlack0.75" SHADE="100" TRANS="1"/>
            <MPoint GX="0" GY="0" CTX="0" CTY="0" CBX="0" CBY="0" CLX="0" CLY="0" CRX="0" CRY="0" CCX="0" CCY="0" NAME="Black" SHADE="100" TRANS="1"/>
        </PAGEOBJECT>
    </DOCUMENT>
</SCRIBUSUTF8NEW>
Document-1.sla (19,825 bytes)   

nitramr

2024-12-10 20:15

developer   ~0051713

I fixed it by creating a new mesh gradient (meshGradientArray) when the gradient type changed from conical to mesh.
Downside: you can not "convert" a conical mesh to an editable mesh by switching the gradient type.

@cbradney please check if the solution is ok.
meshgradient_2024-12-10_01.patch (1,390 bytes)    
Index: scribus/pageitem.cpp
===================================================================
--- scribus/pageitem.cpp	(Revision 26464)
+++ scribus/pageitem.cpp	(Arbeitskopie)
@@ -6164,7 +6164,7 @@
 		fill_gradient = is->getOldState();
 	else
 		fill_gradient = is->getNewState();
-	if (gradientType() == 13)
+	if (gradientType() == Gradient_Conical)
 		createConicalMesh();
 	update();
 }
Index: scribus/scribusdoc.cpp
===================================================================
--- scribus/scribusdoc.cpp	(Revision 26464)
+++ scribus/scribusdoc.cpp	(Arbeitskopie)
@@ -8329,7 +8329,10 @@
 	for (int i = 0; i < selectedItemCount; ++i)
 	{
 		PageItem* currItem = itemSelection->itemAt(i);
-		currItem->setGradientType(typ);
+
+		int oldType = currItem->gradientType();
+
+		currItem->setGradientType(typ);		
 		switch (currItem->gradientType())
 		{
 			case Gradient_None:
@@ -8391,6 +8394,12 @@
 			currItem->updateGradientVectors();
 		if (currItem->gradientType() == Gradient_Conical)
 			currItem->createConicalMesh();
+
+		// 17332: Conical gradient and mesh gradient are sharing the same meshGradientArray.
+		// We have to reset the array for mesh gradient to avoid a resue of the "fake" colors of the conical gradient
+		if (currItem->gradientType() == Gradient_Mesh && oldType == Gradient_Conical)
+			currItem->createGradientMesh(2, 2);
+
 		currItem->update();
 	}
meshgradient_2024-12-10_01.patch (1,390 bytes)   

nitramr

2024-12-10 20:27

developer   ~0051714

The second patch contains few more related changes.
meshgradient_2024-12-10_02.patch (2,461 bytes)    
Index: scribus/pageitem.cpp
===================================================================
--- scribus/pageitem.cpp	(Revision 26464)
+++ scribus/pageitem.cpp	(Arbeitskopie)
@@ -6164,7 +6164,7 @@
 		fill_gradient = is->getOldState();
 	else
 		fill_gradient = is->getNewState();
-	if (gradientType() == 13)
+	if (gradientType() == Gradient_Conical)
 		createConicalMesh();
 	update();
 }
Index: scribus/scribusdoc.cpp
===================================================================
--- scribus/scribusdoc.cpp	(Revision 26464)
+++ scribus/scribusdoc.cpp	(Arbeitskopie)
@@ -8329,6 +8329,9 @@
 	for (int i = 0; i < selectedItemCount; ++i)
 	{
 		PageItem* currItem = itemSelection->itemAt(i);
+
+		int oldType = currItem->gradientType();
+
 		currItem->setGradientType(typ);
 		switch (currItem->gradientType())
 		{
@@ -8391,6 +8394,12 @@
 			currItem->updateGradientVectors();
 		if (currItem->gradientType() == Gradient_Conical)
 			currItem->createConicalMesh();
+
+		// 17332: Conical gradient and mesh gradient are sharing the same meshGradientArray.
+		// We have to reset the array for mesh gradient to avoid a resue of the "fake" colors of the conical gradient
+		if (currItem->gradientType() == Gradient_Mesh && oldType == Gradient_Conical)
+			currItem->createGradientMesh(2, 2);
+
 		currItem->update();
 	}
 
Index: scribus/ui/colorpicker/colorpicker_gradient.cpp
===================================================================
--- scribus/ui/colorpicker/colorpicker_gradient.cpp	(Revision 26464)
+++ scribus/ui/colorpicker/colorpicker_gradient.cpp	(Arbeitskopie)
@@ -437,10 +437,10 @@
 	case Gradient_4Colors:
 		gradType = VGradient::fourcolor;
 		break;
+	case Gradient_Conical:
 	case Gradient_Mesh:
 		gradType = VGradient::mesh;
 		break;
-	case Gradient_Conical:
 	case Gradient_PatchMesh:
 		gradType = VGradient::freemesh;
 		break;
Index: scribus/ui/propertiespalette_fill.cpp
===================================================================
--- scribus/ui/propertiespalette_fill.cpp	(Revision 26464)
+++ scribus/ui/propertiespalette_fill.cpp	(Arbeitskopie)
@@ -370,6 +370,8 @@
 
 	blockUpdates(true);
 
+	m_doc->itemSelection_SetItemGradFill(buttonFillColor->type());
+
 	switch(buttonFillColor->mode())
 	{
 	default:
@@ -444,7 +446,6 @@
 		break;
 	}
 
-	m_doc->itemSelection_SetItemGradFill(buttonFillColor->type());
 	m_doc->itemSelection_SetOverprint(buttonFillColor->generalData().overprint);
 
 	blockUpdates(false);
meshgradient_2024-12-10_02.patch (2,461 bytes)   

Issue History

Date Modified Username Field Change
2024-12-09 20:56 nitramr New Issue
2024-12-09 20:56 nitramr File Added: Document-1.sla
2024-12-09 22:16 nitramr Summary Copy and paste of an object duplicates colors => Change from Conical gradient to mesh Gradient generate new color names
2024-12-09 22:16 nitramr Description Updated
2024-12-09 22:16 nitramr Steps to Reproduce Updated
2024-12-09 22:22 nitramr Description Updated
2024-12-10 20:15 nitramr Note Added: 0051713
2024-12-10 20:15 nitramr File Added: meshgradient_2024-12-10_01.patch
2024-12-10 20:27 nitramr Note Added: 0051714
2024-12-10 20:27 nitramr File Added: meshgradient_2024-12-10_02.patch