261 lines
6.1 KiB
C++
261 lines
6.1 KiB
C++
/**
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* @file llresizebar.cpp
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* @brief LLResizeBar base class
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*
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* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
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* $License$
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*/
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#include "linden_common.h"
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#include "llresizebar.h"
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//#include "llviewermenu.h"
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//#include "llviewerimagelist.h"
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#include "llmath.h"
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#include "llui.h"
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#include "llmenugl.h"
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#include "llfocusmgr.h"
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#include "llwindow.h"
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LLResizeBar::LLResizeBar( const LLString& name, const LLRect& rect, S32 min_width, S32 min_height, Side side )
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:
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LLView( name, rect, TRUE ),
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mDragLastScreenX( 0 ),
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mDragLastScreenY( 0 ),
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mLastMouseScreenX( 0 ),
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mLastMouseScreenY( 0 ),
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mMinWidth( min_width ),
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mMinHeight( min_height ),
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mSide( side )
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{
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// set up some generically good follow code.
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switch( side )
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{
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case LEFT:
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setFollowsLeft();
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setFollowsTop();
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setFollowsBottom();
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break;
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case TOP:
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setFollowsTop();
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setFollowsLeft();
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setFollowsRight();
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break;
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case RIGHT:
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setFollowsRight();
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setFollowsTop();
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setFollowsBottom();
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break;
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case BOTTOM:
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setFollowsBottom();
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setFollowsLeft();
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setFollowsRight();
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break;
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default:
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break;
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}
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// this is just a decorator
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setSaveToXML(FALSE);
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}
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BOOL LLResizeBar::handleMouseDown(S32 x, S32 y, MASK mask)
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{
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if( mEnabled )
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{
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// Route future Mouse messages here preemptively. (Release on mouse up.)
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// No handler needed for focus lost since this clas has no state that depends on it.
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gFocusMgr.setMouseCapture( this );
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localPointToScreen(x, y, &mDragLastScreenX, &mDragLastScreenY);
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mLastMouseScreenX = mDragLastScreenX;
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mLastMouseScreenY = mDragLastScreenY;
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}
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return TRUE;
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}
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BOOL LLResizeBar::handleMouseUp(S32 x, S32 y, MASK mask)
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{
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BOOL handled = FALSE;
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if( hasMouseCapture() )
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{
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// Release the mouse
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gFocusMgr.setMouseCapture( NULL );
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handled = TRUE;
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}
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else
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{
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handled = TRUE;
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}
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return handled;
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}
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EWidgetType LLResizeBar::getWidgetType() const
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{
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return WIDGET_TYPE_RESIZE_BAR;
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}
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LLString LLResizeBar::getWidgetTag() const
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{
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return LL_RESIZE_BAR_TAG;
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}
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BOOL LLResizeBar::handleHover(S32 x, S32 y, MASK mask)
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{
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BOOL handled = FALSE;
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// We only handle the click if the click both started and ended within us
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if( hasMouseCapture() )
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{
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S32 screen_x;
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S32 screen_y;
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localPointToScreen(x, y, &screen_x, &screen_y);
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S32 delta_x = screen_x - mDragLastScreenX;
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S32 delta_y = screen_y - mDragLastScreenY;
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LLCoordGL mouse_dir;
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// use hysteresis on mouse motion to preserve user intent when mouse stops moving
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mouse_dir.mX = (screen_x == mLastMouseScreenX) ? mLastMouseDir.mX : screen_x - mLastMouseScreenX;
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mouse_dir.mY = (screen_y == mLastMouseScreenY) ? mLastMouseDir.mY : screen_y - mLastMouseScreenY;
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mLastMouseDir = mouse_dir;
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mLastMouseScreenX = screen_x;
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mLastMouseScreenY = screen_y;
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// Make sure the mouse in still over the application. We don't want to make the parent
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// so big that we can't see the resize handle any more.
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LLRect valid_rect = getRootView()->getRect();
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LLView* resizing_view = getParent();
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if( valid_rect.localPointInRect( screen_x, screen_y ) && resizing_view )
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{
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// Resize the parent
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LLRect orig_rect = resizing_view->getRect();
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LLRect scaled_rect = orig_rect;
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S32 new_width = orig_rect.getWidth();
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S32 new_height = orig_rect.getHeight();
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switch( mSide )
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{
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case LEFT:
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new_width = orig_rect.getWidth() - delta_x;
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if( new_width < mMinWidth )
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{
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new_width = mMinWidth;
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delta_x = orig_rect.getWidth() - mMinWidth;
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}
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scaled_rect.translate(delta_x, 0);
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break;
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case TOP:
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new_height = orig_rect.getHeight() + delta_y;
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if( new_height < mMinHeight )
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{
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new_height = mMinHeight;
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delta_y = mMinHeight - orig_rect.getHeight();
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}
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break;
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case RIGHT:
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new_width = orig_rect.getWidth() + delta_x;
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if( new_width < mMinWidth )
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{
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new_width = mMinWidth;
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delta_x = mMinWidth - orig_rect.getWidth();
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}
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break;
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case BOTTOM:
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new_height = orig_rect.getHeight() - delta_y;
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if( new_height < mMinHeight )
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{
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new_height = mMinHeight;
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delta_y = orig_rect.getHeight() - mMinHeight;
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}
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scaled_rect.translate(0, delta_y);
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break;
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}
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scaled_rect.mTop = scaled_rect.mBottom + new_height;
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scaled_rect.mRight = scaled_rect.mLeft + new_width;
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resizing_view->setRect(scaled_rect);
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LLView* snap_view = NULL;
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switch( mSide )
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{
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case LEFT:
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snap_view = resizing_view->findSnapEdge(scaled_rect.mLeft, mouse_dir, SNAP_LEFT, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
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break;
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case TOP:
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snap_view = resizing_view->findSnapEdge(scaled_rect.mTop, mouse_dir, SNAP_TOP, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
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break;
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case RIGHT:
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snap_view = resizing_view->findSnapEdge(scaled_rect.mRight, mouse_dir, SNAP_RIGHT, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
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break;
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case BOTTOM:
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snap_view = resizing_view->findSnapEdge(scaled_rect.mBottom, mouse_dir, SNAP_BOTTOM, SNAP_PARENT_AND_SIBLINGS, LLUI::sConfigGroup->getS32("SnapMargin"));
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break;
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}
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// register "snap" behavior with snapped view
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resizing_view->snappedTo(snap_view);
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// restore original rectangle so the appropriate changes are detected
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resizing_view->setRect(orig_rect);
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// change view shape as user operation
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resizing_view->userSetShape(scaled_rect);
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// update last valid mouse cursor position based on resized view's actual size
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LLRect new_rect = resizing_view->getRect();
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switch(mSide)
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{
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case LEFT:
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mDragLastScreenX += new_rect.mLeft - orig_rect.mLeft;
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break;
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case RIGHT:
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mDragLastScreenX += new_rect.mRight - orig_rect.mRight;
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break;
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case TOP:
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mDragLastScreenY += new_rect.mTop - orig_rect.mTop;
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break;
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case BOTTOM:
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mDragLastScreenY += new_rect.mBottom- orig_rect.mBottom;
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break;
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default:
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break;
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}
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}
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handled = TRUE;
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}
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else
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{
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handled = TRUE;
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}
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if( handled )
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{
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switch( mSide )
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{
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case LEFT:
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case RIGHT:
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getWindow()->setCursor(UI_CURSOR_SIZEWE);
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break;
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case TOP:
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case BOTTOM:
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getWindow()->setCursor(UI_CURSOR_SIZENS);
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break;
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}
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}
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return handled;
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}
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