SL-20438 Emoji picker will dock with edge of screen if the Conversations floater is dragged there

4 files changed, 100 insertions, 45 deletions

diff --git a/indra/llui/llfloater.cpp b/indra/llui/llfloater.cpp
index 98895d56dd..23d3a66631 100644
--- a/indra/llui/llfloater.cpp
+++ b/indra/llui/llfloater.cpp
@@ -829,6 +829,24 @@ void LLFloater::reshape(S32 width, S32 height, BOOL called_from_parent)
 	LLPanel::reshape(width, height, called_from_parent);
 }
 
+// virtual
+void LLFloater::translate(S32 x, S32 y)
+{
+    LLView::translate(x, y);
+
+    if (!mTranslateWithDependents || mDependents.empty())
+        return;
+
+    for (const LLHandle<LLFloater>& handle : mDependents)
+    {
+        LLFloater* floater = handle.get();
+        if (floater && floater->getSnapTarget() == getHandle())
+        {
+            floater->LLView::translate(x, y);
+        }
+    }
+}
+
 void LLFloater::releaseFocus()
 {
 	LLUI::getInstance()->removePopup(this);
@@ -1117,9 +1135,9 @@ BOOL LLFloater::canSnapTo(const LLView* other_view)
 
 	if (other_view != getParent())
 	{
-		const LLFloater* other_floaterp = dynamic_cast<const LLFloater*>(other_view);		
-		if (other_floaterp 
-			&& other_floaterp->getSnapTarget() == getHandle() 
+		const LLFloater* other_floaterp = dynamic_cast<const LLFloater*>(other_view);
+		if (other_floaterp
+			&& other_floaterp->getSnapTarget() == getHandle()
 			&& mDependents.find(other_floaterp->getHandle()) != mDependents.end())
 		{
 			// this is a dependent that is already snapped to us, so don't snap back to it
@@ -1552,6 +1570,44 @@ void LLFloater::removeDependentFloater(LLFloater* floaterp)
 	floaterp->mDependeeHandle = LLHandle<LLFloater>();
 }
 
+void LLFloater::fitWithDependentsOnScreen(const LLRect& left, const LLRect& bottom, const LLRect& right, const LLRect& constraint, S32 min_overlap_pixels)
+{
+    LLRect total_rect = getRect();
+
+    for (const LLHandle<LLFloater>& handle : mDependents)
+    {
+        LLFloater* floater = handle.get();
+        if (floater && floater->getSnapTarget() == getHandle())
+        {
+            total_rect.unionWith(floater->getRect());
+        }
+    }
+
+	S32 delta_left = left.notEmpty() ? left.mRight - total_rect.mRight : 0;
+	S32 delta_bottom = bottom.notEmpty() ? bottom.mTop - total_rect.mTop : 0;
+	S32 delta_right = right.notEmpty() ? right.mLeft - total_rect.mLeft : 0;
+
+	// move floater with dependings fully onscreen
+    mTranslateWithDependents = true;
+    if (translateRectIntoRect(total_rect, constraint, min_overlap_pixels))
+    {
+        clearSnapTarget();
+    }
+    else if (delta_left > 0 && total_rect.mTop < left.mTop && total_rect.mBottom > left.mBottom)
+    {
+        translate(delta_left, 0);
+    }
+    else if (delta_bottom > 0 && total_rect.mLeft > bottom.mLeft && total_rect.mRight < bottom.mRight)
+    {
+        translate(0, delta_bottom);
+    }
+    else if (delta_right < 0 && total_rect.mTop < right.mTop    && total_rect.mBottom > right.mBottom)
+    {
+        translate(delta_right, 0);
+    }
+    mTranslateWithDependents = false;
+}
+
 BOOL LLFloater::offerClickToButton(S32 x, S32 y, MASK mask, EFloaterButton index)
 {
 	if( mButtonsEnabled[index] )
@@ -2862,10 +2918,17 @@ void LLFloaterView::adjustToFitScreen(LLFloater* floater, BOOL allow_partial_out
 		// floater is hosted elsewhere, so ignore
 		return;
 	}
+
+	if (floater->getDependee() &&
+		floater->getDependee() == floater->getSnapTarget().get())
+	{
+		// floater depends on other and snaps to it, so ignore
+		return;
+	}
+
 	LLRect::tCoordType screen_width = getSnapRect().getWidth();
 	LLRect::tCoordType screen_height = getSnapRect().getHeight();
 
-	
 	// only automatically resize non-minimized, resizable floaters
 	if( floater->isResizable() && !floater->isMinimized() )
 	{
@@ -2907,29 +2970,10 @@ void LLFloaterView::adjustToFitScreen(LLFloater* floater, BOOL allow_partial_out
 		}
 	}
 
-	const LLRect& floater_rect = floater->getRect();
-
-	S32 delta_left = mToolbarLeftRect.notEmpty() ? mToolbarLeftRect.mRight - floater_rect.mRight : 0;
-	S32 delta_bottom = mToolbarBottomRect.notEmpty() ? mToolbarBottomRect.mTop - floater_rect.mTop : 0;
-	S32 delta_right = mToolbarRightRect.notEmpty() ? mToolbarRightRect.mLeft - floater_rect.mLeft : 0;
+    const LLRect& constraint = snap_in_toolbars ? getSnapRect() : gFloaterView->getRect();
+    S32 min_overlap_pixels = allow_partial_outside ? FLOATER_MIN_VISIBLE_PIXELS : S32_MAX;
 
-	// move window fully onscreen
-	if (floater->translateIntoRect( snap_in_toolbars ? getSnapRect() : gFloaterView->getRect(), allow_partial_outside ? FLOATER_MIN_VISIBLE_PIXELS : S32_MAX ))
-	{
-		floater->clearSnapTarget();
-	}
-	else if (delta_left > 0 && floater_rect.mTop < mToolbarLeftRect.mTop && floater_rect.mBottom > mToolbarLeftRect.mBottom)
-	{
-		floater->translate(delta_left, 0);
-	}
-	else if (delta_bottom > 0 && floater_rect.mLeft > mToolbarBottomRect.mLeft && floater_rect.mRight < mToolbarBottomRect.mRight)
-	{
-		floater->translate(0, delta_bottom);
-	}
-	else if (delta_right < 0 && floater_rect.mTop < mToolbarRightRect.mTop	&& floater_rect.mBottom > mToolbarRightRect.mBottom)
-	{
-		floater->translate(delta_right, 0);
-	}
+	floater->fitWithDependentsOnScreen(mToolbarLeftRect, mToolbarBottomRect, mToolbarRightRect, constraint, min_overlap_pixels);
 }
 
 void LLFloaterView::draw()
diff --git a/indra/llui/llfloater.h b/indra/llui/llfloater.h
index 3699629ef8..08fc5f425f 100644
--- a/indra/llui/llfloater.h
+++ b/indra/llui/llfloater.h
@@ -113,8 +113,6 @@ struct LLCoordFloater : LLCoord<LL_COORD_FLOATER>
 	bool operator!=(const LLCoordFloater& other) const { return !(*this == other); }
 
 	void setFloater(LLFloater& floater);
-
-	
 };
 
 class LLFloater : public LLPanel, public LLInstanceTracker<LLFloater>
@@ -237,6 +235,7 @@ public:
 	virtual void	closeHostedFloater();
 
 	/*virtual*/ void reshape(S32 width, S32 height, BOOL called_from_parent = TRUE);
+	/*virtual*/ void translate(S32 x, S32 y);
 	
 	// Release keyboard and mouse focus
 	void			releaseFocus();
@@ -258,7 +257,8 @@ public:
 	void			addDependentFloater(LLFloater* dependent, BOOL reposition = TRUE, BOOL resize = FALSE);
 	void			addDependentFloater(LLHandle<LLFloater> dependent_handle, BOOL reposition = TRUE, BOOL resize = FALSE);
 	LLFloater*		getDependee() { return (LLFloater*)mDependeeHandle.get(); }
-	void		removeDependentFloater(LLFloater* dependent);
+	void			removeDependentFloater(LLFloater* dependent);
+	void			fitWithDependentsOnScreen(const LLRect& left, const LLRect& bottom, const LLRect& right, const LLRect& constraint, S32 min_overlap_pixels);
 	BOOL			isMinimized() const				{ return mMinimized; }
 	/// isShown() differs from getVisible() in that isShown() also considers
 	/// isMinimized(). isShown() is true only if visible and not minimized.
@@ -506,6 +506,7 @@ private:
 	typedef std::set<LLHandle<LLFloater> > handle_set_t;
 	typedef std::set<LLHandle<LLFloater> >::iterator handle_set_iter_t;
 	handle_set_t	mDependents;
+	bool			mTranslateWithDependents { false };
 
 	bool			mButtonsEnabled[BUTTON_COUNT];
 	F32				mButtonScale;
diff --git a/indra/llui/llview.cpp b/indra/llui/llview.cpp
index d8d605871f..0046105870 100644
--- a/indra/llui/llview.cpp
+++ b/indra/llui/llview.cpp
@@ -1753,23 +1753,26 @@ LLCoordGL getNeededTranslation(const LLRect& input, const LLRect& constraint, S3
 	const S32 KEEP_ONSCREEN_PIXELS_WIDTH = llmin(min_overlap_pixels, input.getWidth());
 	const S32 KEEP_ONSCREEN_PIXELS_HEIGHT = llmin(min_overlap_pixels, input.getHeight());
 
-	if( input.mRight - KEEP_ONSCREEN_PIXELS_WIDTH < constraint.mLeft )
+	if (KEEP_ONSCREEN_PIXELS_WIDTH <= constraint.getWidth() &&
+		KEEP_ONSCREEN_PIXELS_HEIGHT <= constraint.getHeight())
 	{
-		delta.mX = constraint.mLeft - (input.mRight - KEEP_ONSCREEN_PIXELS_WIDTH);
-	}
-	else if( input.mLeft + KEEP_ONSCREEN_PIXELS_WIDTH > constraint.mRight )
-	{
-		delta.mX = constraint.mRight - (input.mLeft + KEEP_ONSCREEN_PIXELS_WIDTH);
-	}
+		if (input.mRight - KEEP_ONSCREEN_PIXELS_WIDTH < constraint.mLeft)
+		{
+			delta.mX = constraint.mLeft - (input.mRight - KEEP_ONSCREEN_PIXELS_WIDTH);
+		}
+		else if (input.mLeft + KEEP_ONSCREEN_PIXELS_WIDTH > constraint.mRight)
+		{
+			delta.mX = constraint.mRight - (input.mLeft + KEEP_ONSCREEN_PIXELS_WIDTH);
+		}
 
-	if( input.mTop > constraint.mTop )
-	{
-		delta.mY = constraint.mTop - input.mTop;
-	}
-	else
-	if( input.mTop - KEEP_ONSCREEN_PIXELS_HEIGHT < constraint.mBottom )
-	{
-		delta.mY = constraint.mBottom - (input.mTop - KEEP_ONSCREEN_PIXELS_HEIGHT);
+		if (input.mTop > constraint.mTop)
+		{
+			delta.mY = constraint.mTop - input.mTop;
+		}
+		else if (input.mTop - KEEP_ONSCREEN_PIXELS_HEIGHT < constraint.mBottom)
+		{
+			delta.mY = constraint.mBottom - (input.mTop - KEEP_ONSCREEN_PIXELS_HEIGHT);
+		}
 	}
 
 	return delta;
@@ -1780,13 +1783,19 @@ LLCoordGL getNeededTranslation(const LLRect& input, const LLRect& constraint, S3
 // (Why top and left?  That's where the drag bars are for floaters.)
 BOOL LLView::translateIntoRect(const LLRect& constraint, S32 min_overlap_pixels)
 {
-	LLCoordGL translation = getNeededTranslation(getRect(), constraint, min_overlap_pixels);
+    return translateRectIntoRect(getRect(), constraint, min_overlap_pixels);
+}
+
+BOOL LLView::translateRectIntoRect(const LLRect& rect, const LLRect& constraint, S32 min_overlap_pixels)
+{
+	LLCoordGL translation = getNeededTranslation(rect, constraint, min_overlap_pixels);
 
 	if (translation.mX != 0 || translation.mY != 0)
 	{
 		translate(translation.mX, translation.mY);
 		return TRUE;
 	}
+
 	return FALSE;
 }
 
diff --git a/indra/llui/llview.h b/indra/llui/llview.h
index 3d52d3048f..b498451dce 100644
--- a/indra/llui/llview.h
+++ b/indra/llui/llview.h
@@ -369,6 +369,7 @@ public:
 	virtual void	translate( S32 x, S32 y );
 	void			setOrigin( S32 x, S32 y )	{ mRect.translate( x - mRect.mLeft, y - mRect.mBottom ); }
 	BOOL			translateIntoRect( const LLRect& constraint, S32 min_overlap_pixels = S32_MAX);
+	BOOL			translateRectIntoRect( const LLRect& rect, const LLRect& constraint, S32 min_overlap_pixels = S32_MAX);
 	BOOL			translateIntoRectWithExclusion( const LLRect& inside, const LLRect& exclude, S32 min_overlap_pixels = S32_MAX);
 	void			centerWithin(const LLRect& bounds);