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/**
* @file llresizehandle.cpp
* @brief LLResizeHandle base class
*
* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#include "linden_common.h"
#include "llresizehandle.h"
#include "llfocusmgr.h"
#include "llmath.h"
#include "llui.h"
#include "llmenugl.h"
#include "llcontrol.h"
#include "llfloater.h"
#include "llwindow.h"
const S32 RESIZE_BORDER_WIDTH = 3;
LLResizeHandle::LLResizeHandle( const LLString& name, const LLRect& rect, S32 min_width, S32 min_height, ECorner corner )
:
LLView( name, rect, TRUE ),
mDragStartScreenX( 0 ),
mDragStartScreenY( 0 ),
mLastMouseScreenX( 0 ),
mLastMouseScreenY( 0 ),
mImage( NULL ),
mMinWidth( min_width ),
mMinHeight( min_height ),
mCorner( corner )
{
setSaveToXML(false);
if( RIGHT_BOTTOM == mCorner)
{
LLUUID image_id(LLUI::sConfigGroup->getString("UIImgResizeBottomRightUUID"));
mImage = LLUI::sImageProvider->getUIImageByID(image_id);
}
switch( mCorner )
{
case LEFT_TOP: setFollows( FOLLOWS_LEFT | FOLLOWS_TOP ); break;
case LEFT_BOTTOM: setFollows( FOLLOWS_LEFT | FOLLOWS_BOTTOM ); break;
case RIGHT_TOP: setFollows( FOLLOWS_RIGHT | FOLLOWS_TOP ); break;
case RIGHT_BOTTOM: setFollows( FOLLOWS_RIGHT | FOLLOWS_BOTTOM ); break;
}
}
EWidgetType LLResizeHandle::getWidgetType() const
{
return WIDGET_TYPE_RESIZE_HANDLE;
}
LLString LLResizeHandle::getWidgetTag() const
{
return LL_RESIZE_HANDLE_TAG;
}
BOOL LLResizeHandle::handleMouseDown(S32 x, S32 y, MASK mask)
{
BOOL handled = FALSE;
if( getVisible() && pointInHandle(x, y) )
{
handled = TRUE;
if( mEnabled )
{
// Route future Mouse messages here preemptively. (Release on mouse up.)
// No handler needed for focus lost since this clas has no state that depends on it.
gFocusMgr.setMouseCapture( this, NULL );
localPointToScreen(x, y, &mDragStartScreenX, &mDragStartScreenY);
mLastMouseScreenX = mDragStartScreenX;
mLastMouseScreenY = mDragStartScreenY;
}
}
return handled;
}
BOOL LLResizeHandle::handleMouseUp(S32 x, S32 y, MASK mask)
{
BOOL handled = FALSE;
if( gFocusMgr.getMouseCapture() == this )
{
// Release the mouse
gFocusMgr.setMouseCapture( NULL, NULL );
handled = TRUE;
}
else
if( getVisible() && pointInHandle(x, y) )
{
handled = TRUE;
}
return handled;
}
BOOL LLResizeHandle::handleHover(S32 x, S32 y, MASK mask)
{
BOOL handled = FALSE;
// We only handle the click if the click both started and ended within us
if( gFocusMgr.getMouseCapture() == this )
{
// Make sure the mouse in still over the application. We don't want to make the parent
// so big that we can't see the resize handle any more.
S32 screen_x;
S32 screen_y;
localPointToScreen(x, y, &screen_x, &screen_y);
const LLRect& valid_rect = gFloaterView->getRect(); // Assumes that the parent is a floater.
screen_x = llclamp( screen_x, valid_rect.mLeft, valid_rect.mRight );
screen_y = llclamp( screen_y, valid_rect.mBottom, valid_rect.mTop );
LLView* parentView = getParent();
if( parentView )
{
// Resize the parent
LLRect parent_rect = parentView->getRect();
LLRect scaled_rect = parent_rect;
S32 delta_x = screen_x - mDragStartScreenX;
S32 delta_y = screen_y - mDragStartScreenY;
LLCoordGL mouse_dir;
// use hysteresis on mouse motion to preserve user intent when mouse stops moving
mouse_dir.mX = (screen_x == mLastMouseScreenX) ? mLastMouseDir.mX : screen_x - mLastMouseScreenX;
mouse_dir.mY = (screen_y == mLastMouseScreenY) ? mLastMouseDir.mY : screen_y - mLastMouseScreenY;
mLastMouseScreenX = screen_x;
mLastMouseScreenY = screen_y;
mLastMouseDir = mouse_dir;
S32 x_multiple = 1;
S32 y_multiple = 1;
switch( mCorner )
{
case LEFT_TOP:
x_multiple = -1;
y_multiple = 1;
break;
case LEFT_BOTTOM:
x_multiple = -1;
y_multiple = -1;
break;
case RIGHT_TOP:
x_multiple = 1;
y_multiple = 1;
break;
case RIGHT_BOTTOM:
x_multiple = 1;
y_multiple = -1;
break;
}
S32 new_width = parent_rect.getWidth() + x_multiple * delta_x;
if( new_width < mMinWidth )
{
new_width = mMinWidth;
delta_x = x_multiple * (mMinWidth - parent_rect.getWidth());
}
S32 new_height = parent_rect.getHeight() + y_multiple * delta_y;
if( new_height < mMinHeight )
{
new_height = mMinHeight;
delta_y = y_multiple * (mMinHeight - parent_rect.getHeight());
}
switch( mCorner )
{
case LEFT_TOP:
scaled_rect.translate(delta_x, 0);
break;
case LEFT_BOTTOM:
scaled_rect.translate(delta_x, delta_y);
break;
case RIGHT_TOP:
break;
case RIGHT_BOTTOM:
scaled_rect.translate(0, delta_y);
break;
}
// temporarily set new parent rect
scaled_rect.mRight = scaled_rect.mLeft + new_width;
scaled_rect.mTop = scaled_rect.mBottom + new_height;
parentView->setRect(scaled_rect);
S32 snap_delta_x = 0;
S32 snap_delta_y = 0;
LLView* snap_view = NULL;
LLView* test_view = NULL;
// now do snapping
switch(mCorner)
{
case LEFT_TOP:
snap_view = parentView->findSnapEdge(snap_delta_x, mouse_dir, SNAP_LEFT, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
snap_delta_x -= scaled_rect.mLeft;
test_view = parentView->findSnapEdge(snap_delta_y, mouse_dir, SNAP_TOP, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
snap_delta_y -= scaled_rect.mTop;
if (!snap_view)
{
snap_view = test_view;
}
scaled_rect.mLeft += snap_delta_x;
scaled_rect.mTop += snap_delta_y;
break;
case LEFT_BOTTOM:
snap_view = parentView->findSnapEdge(snap_delta_x, mouse_dir, SNAP_LEFT, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
snap_delta_x -= scaled_rect.mLeft;
test_view = parentView->findSnapEdge(snap_delta_y, mouse_dir, SNAP_BOTTOM, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
snap_delta_y -= scaled_rect.mBottom;
if (!snap_view)
{
snap_view = test_view;
}
scaled_rect.mLeft += snap_delta_x;
scaled_rect.mBottom += snap_delta_y;
break;
case RIGHT_TOP:
snap_view = parentView->findSnapEdge(snap_delta_x, mouse_dir, SNAP_RIGHT, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
snap_delta_x -= scaled_rect.mRight;
test_view = parentView->findSnapEdge(snap_delta_y, mouse_dir, SNAP_TOP, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
snap_delta_y -= scaled_rect.mTop;
if (!snap_view)
{
snap_view = test_view;
}
scaled_rect.mRight += snap_delta_x;
scaled_rect.mTop += snap_delta_y;
break;
case RIGHT_BOTTOM:
snap_view = parentView->findSnapEdge(snap_delta_x, mouse_dir, SNAP_RIGHT, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
snap_delta_x -= scaled_rect.mRight;
test_view = parentView->findSnapEdge(snap_delta_y, mouse_dir, SNAP_BOTTOM, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
snap_delta_y -= scaled_rect.mBottom;
if (!snap_view)
{
snap_view = test_view;
}
scaled_rect.mRight += snap_delta_x;
scaled_rect.mBottom += snap_delta_y;
break;
}
parentView->snappedTo(snap_view);
// reset parent rect
parentView->setRect(parent_rect);
// translate and scale to new shape
parentView->reshape(scaled_rect.getWidth(), scaled_rect.getHeight(), FALSE);
parentView->translate(scaled_rect.mLeft - parentView->getRect().mLeft, scaled_rect.mBottom - parentView->getRect().mBottom);
screen_x = mDragStartScreenX + delta_x + snap_delta_x;
screen_y = mDragStartScreenY + delta_y + snap_delta_y;
mDragStartScreenX = screen_x;
mDragStartScreenY = screen_y;
}
lldebugst(LLERR_USER_INPUT) << "hover handled by " << getName() << " (active) " << llendl;
handled = TRUE;
}
else
if( getVisible() && pointInHandle( x, y ) )
{
lldebugst(LLERR_USER_INPUT) << "hover handled by " << getName() << " (inactive) " << llendl;
handled = TRUE;
}
if( handled )
{
switch( mCorner )
{
case RIGHT_BOTTOM:
case LEFT_TOP:
getWindow()->setCursor(UI_CURSOR_SIZENWSE);
break;
case LEFT_BOTTOM:
case RIGHT_TOP:
getWindow()->setCursor(UI_CURSOR_SIZENESW);
break;
}
}
return handled;
}
// assumes GL state is set for 2D
void LLResizeHandle::draw()
{
if( mImage.notNull() && getVisible() && (RIGHT_BOTTOM == mCorner) )
{
gl_draw_image( 0, 0, mImage );
}
}
BOOL LLResizeHandle::pointInHandle( S32 x, S32 y )
{
if( pointInView(x, y) )
{
const S32 TOP_BORDER = (mRect.getHeight() - RESIZE_BORDER_WIDTH);
const S32 RIGHT_BORDER = (mRect.getWidth() - RESIZE_BORDER_WIDTH);
switch( mCorner )
{
case LEFT_TOP: return (x <= RESIZE_BORDER_WIDTH) || (y >= TOP_BORDER);
case LEFT_BOTTOM: return (x <= RESIZE_BORDER_WIDTH) || (y <= RESIZE_BORDER_WIDTH);
case RIGHT_TOP: return (x >= RIGHT_BORDER) || (y >= TOP_BORDER);
case RIGHT_BOTTOM: return TRUE;
}
}
return FALSE;
}
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