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cleaning up and simplifying checkbox. Adding tri-state checkbox behavior keyed off of the presence of an attribute.

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This commit is contained in:
pinkerton@netscape.com
1999-08-11 04:45:49 +00:00
parent b2f3bea49c
commit a9d54387ae
8 changed files with 517 additions and 221 deletions
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149
layout/html/forms/src/nsGfxCheckboxControlFrame.cpp
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@@ -26,8 +26,6 @@
#include "nsWidgetsCID.h"
#include "nsIComponentManager.h"
nsresult
NS_NewGfxCheckboxControlFrame(nsIFrame** aNewFrame)
{
@@ -43,19 +41,13 @@ NS_NewGfxCheckboxControlFrame(nsIFrame** aNewFrame)
return NS_OK;
}
// Initialize GFX-rendered state
nsGfxCheckboxControlFrame::nsGfxCheckboxControlFrame()
: mChecked(eOff)
{
// Initialize GFX-rendered state
mMouseDownOnCheckbox = PR_FALSE;
mChecked = PR_FALSE;
}
void
nsGfxCheckboxControlFrame::MouseClicked(nsIPresContext* aPresContext)
{
mMouseDownOnCheckbox = PR_FALSE;
Inherited::MouseClicked(aPresContext);
}
void
nsGfxCheckboxControlFrame::PaintCheckBox(nsIPresContext& aPresContext,
@@ -68,84 +60,125 @@ nsGfxCheckboxControlFrame::PaintCheckBox(nsIPresContext& aPresContext,
float p2t;
aPresContext.GetScaledPixelsToTwips(&p2t);
PRBool checked = PR_FALSE;
if ( IsTristateCheckbox() ) {
// Get current checked state through content model.
// XXX this won't work under printing. does that matter???
CheckState checked = GetCheckboxState();
switch ( checked ) {
case eOn:
{
const nsStyleColor* color = (const nsStyleColor*)
mStyleContext->GetStyleData(eStyleStruct_Color);
aRenderingContext.SetColor(color->mColor);
nsFormControlHelper::PaintCheckMark(aRenderingContext, p2t, mRect.width, mRect.height);
break;
}
case eMixed:
{
const nsStyleColor* color = (const nsStyleColor*)
mStyleContext->GetStyleData(eStyleStruct_Color);
aRenderingContext.SetColor(color->mColor);
PaintMixedMark(aRenderingContext, p2t, mRect.width, mRect.height);
break;
}
} // case of value of checkbox
}
else {
// Get current checked state through content model.
// XXX: This is very inefficient, but it is necessary in the case of printing.
// During printing the Paint is called but the actual state of the checkbox
// is in a frame in presentation shell 0.
/*XXXnsresult result = */GetCurrentCheckState(&checked);
if (PR_TRUE == checked) {
// Draw check mark
const nsStyleColor* color = (const nsStyleColor*)
mStyleContext->GetStyleData(eStyleStruct_Color);
aRenderingContext.SetColor(color->mColor);
nsFormControlHelper::PaintCheckMark(aRenderingContext,
p2t, mRect.width, mRect.height);
PRBool checked = PR_FALSE;
GetCurrentCheckState(&checked);
if ( checked ) {
const nsStyleColor* color = (const nsStyleColor*)
mStyleContext->GetStyleData(eStyleStruct_Color);
aRenderingContext.SetColor(color->mColor);
nsFormControlHelper::PaintCheckMark(aRenderingContext, p2t, mRect.width, mRect.height);
}
}
PRBool clip;
aRenderingContext.PopState(clip);
}
//
// PaintMixedMark
//
// Like nsFormControlHelper::PaintCheckMark(), but paints the horizontal "mixed"
// bar inside the box. Only used for tri-state checkboxes.
//
void
nsGfxCheckboxControlFrame::PaintMixedMark ( nsIRenderingContext& aRenderingContext,
float aPixelsToTwips, PRUint32 aWidth, PRUint32 aHeight)
{
const PRUint32 checkpoints = 4;
const PRUint32 checksize = 6; //This is value is determined by added 2 units to the end
//of the 7X& pixel rectangle below to provide some white space
//around the checkmark when it is rendered.
// Points come from the coordinates on a 7X7 pixels
// box with 0,0 at the lower left.
nscoord checkedPolygonDef[] = { 1,2, 5,2, 5,4, 1,4 };
// Location of the center point of the checkmark
const PRUint32 centerx = 3;
const PRUint32 centery = 3;
nsPoint checkedPolygon[checkpoints];
PRUint32 defIndex = 0;
PRUint32 polyIndex = 0;
// Scale the checkmark based on the smallest dimension
PRUint32 size = aWidth / checksize;
if (aHeight < aWidth)
size = aHeight / checksize;
// Center and offset each point in the polygon definition.
for (defIndex = 0; defIndex < (checkpoints * 2); defIndex++) {
checkedPolygon[polyIndex].x = nscoord((((checkedPolygonDef[defIndex]) - centerx) * (size)) + (aWidth / 2));
defIndex++;
checkedPolygon[polyIndex].y = nscoord((((checkedPolygonDef[defIndex]) - centery) * (size)) + (aHeight / 2));
polyIndex++;
}
aRenderingContext.FillPolygon(checkedPolygon, checkpoints);
} // PaintMixedMark
NS_METHOD
nsGfxCheckboxControlFrame::Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
const nsStyleDisplay* disp = (const nsStyleDisplay*)
mStyleContext->GetStyleData(eStyleStruct_Display);
if (!disp->mVisible)
return NS_OK;
mStyleContext->GetStyleData(eStyleStruct_Display);
if (!disp->mVisible)
return NS_OK;
// Paint the background
// Paint the background
Inherited::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
if (NS_FRAME_PAINT_LAYER_FOREGROUND == aWhichLayer) {
// Paint the checkmark
// Paint the checkmark
PaintCheckBox(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
}
return NS_OK;
}
NS_METHOD nsGfxCheckboxControlFrame::HandleEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus)
{
if (nsEventStatus_eConsumeNoDefault == aEventStatus) {
return NS_OK;
}
// Handle GFX rendered widget Mouse Down event
PRInt32 type;
GetType(&type);
switch (aEvent->message) {
case NS_MOUSE_LEFT_BUTTON_DOWN:
mMouseDownOnCheckbox = PR_TRUE;
//XXX: TODO render gray rectangle on mouse down
break;
case NS_MOUSE_EXIT:
mMouseDownOnCheckbox = PR_FALSE;
//XXX: TO DO clear gray rectangle on mouse up
break;
}
return(Inherited::HandleEvent(aPresContext, aEvent, aEventStatus));
}
PRBool nsGfxCheckboxControlFrame::GetCheckboxState()
nsCheckboxControlFrame::CheckState
nsGfxCheckboxControlFrame :: GetCheckboxState ( )
{
return mChecked;
}
void nsGfxCheckboxControlFrame::SetCheckboxState(PRBool aValue)
void
nsGfxCheckboxControlFrame :: SetCheckboxState ( nsCheckboxControlFrame::CheckState aValue )
{
mChecked = aValue;
nsFormControlHelper::ForceDrawFrame(this);
nsFormControlHelper::ForceDrawFrame(this);
}