/** * @file llresizebar.cpp * @brief LLResizeBar base class * * $LicenseInfo:firstyear=2001&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #include "linden_common.h" #include "llresizebar.h" #include "lllocalcliprect.h" #include "llmath.h" #include "llui.h" #include "llmenugl.h" #include "llfocusmgr.h" #include "llwindow.h" LLResizeBar::Params::Params() : max_size("max_size", S32_MAX), snapping_enabled("snapping_enabled", true), resizing_view("resizing_view"), side("side"), allow_double_click_snapping("allow_double_click_snapping", true) { name = "resize_bar"; } LLResizeBar::LLResizeBar(const LLResizeBar::Params& p) : LLView(p), mDragLastScreenX( 0 ), mDragLastScreenY( 0 ), mLastMouseScreenX( 0 ), mLastMouseScreenY( 0 ), mMinSize( p.min_size ), mMaxSize( p.max_size ), mSide( p.side ), mSnappingEnabled(p.snapping_enabled), mAllowDoubleClickSnapping(p.allow_double_click_snapping), mResizingView(p.resizing_view), mResizeListener(NULL), mImagePanel(NULL) { setFollowsNone(); // set up some generically good follow code. switch( mSide ) { case LEFT: setFollowsLeft(); setFollowsTop(); setFollowsBottom(); break; case TOP: setFollowsTop(); setFollowsLeft(); setFollowsRight(); break; case RIGHT: setFollowsRight(); setFollowsTop(); setFollowsBottom(); break; case BOTTOM: setFollowsBottom(); setFollowsLeft(); setFollowsRight(); break; default: break; } } BOOL LLResizeBar::handleMouseDown(S32 x, S32 y, MASK mask) { if (!canResize()) return FALSE; // 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 ); localPointToScreen(x, y, &mDragLastScreenX, &mDragLastScreenY); mLastMouseScreenX = mDragLastScreenX; mLastMouseScreenY = mDragLastScreenY; return TRUE; } BOOL LLResizeBar::handleMouseUp(S32 x, S32 y, MASK mask) { BOOL handled = FALSE; if( hasMouseCapture() ) { // Release the mouse gFocusMgr.setMouseCapture( NULL ); handled = TRUE; } else { handled = TRUE; } return handled; } BOOL LLResizeBar::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( hasMouseCapture() ) { S32 screen_x; S32 screen_y; localPointToScreen(x, y, &screen_x, &screen_y); S32 delta_x = screen_x - mDragLastScreenX; S32 delta_y = screen_y - mDragLastScreenY; 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; mLastMouseDir = mouse_dir; mLastMouseScreenX = screen_x; mLastMouseScreenY = screen_y; // 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. LLRect valid_rect = getRootView()->getRect(); if( valid_rect.localPointInRect( screen_x, screen_y ) && mResizingView ) { // Resize the parent LLRect orig_rect = mResizingView->getRect(); LLRect scaled_rect = orig_rect; S32 new_width = orig_rect.getWidth(); S32 new_height = orig_rect.getHeight(); switch( mSide ) { case LEFT: new_width = llclamp(orig_rect.getWidth() - delta_x, mMinSize, mMaxSize); delta_x = orig_rect.getWidth() - new_width; scaled_rect.translate(delta_x, 0); break; case TOP: new_height = llclamp(orig_rect.getHeight() + delta_y, mMinSize, mMaxSize); delta_y = new_height - orig_rect.getHeight(); break; case RIGHT: new_width = llclamp(orig_rect.getWidth() + delta_x, mMinSize, mMaxSize); delta_x = new_width - orig_rect.getWidth(); break; case BOTTOM: new_height = llclamp(orig_rect.getHeight() - delta_y, mMinSize, mMaxSize); delta_y = orig_rect.getHeight() - new_height; scaled_rect.translate(0, delta_y); break; } notifyParent(LLSD().with("action", "resize") .with("view_name", mResizingView->getName()) .with("new_height", new_height) .with("new_width", new_width)); scaled_rect.mTop = scaled_rect.mBottom + new_height; scaled_rect.mRight = scaled_rect.mLeft + new_width; mResizingView->setRect(scaled_rect); LLView* snap_view = NULL; if (mSnappingEnabled) { static LLUICachedControl<S32> snap_margin ("SnapMargin", 0); switch( mSide ) { case LEFT: snap_view = mResizingView->findSnapEdge(scaled_rect.mLeft, mouse_dir, SNAP_LEFT, SNAP_PARENT_AND_SIBLINGS, snap_margin); break; case TOP: snap_view = mResizingView->findSnapEdge(scaled_rect.mTop, mouse_dir, SNAP_TOP, SNAP_PARENT_AND_SIBLINGS, snap_margin); break; case RIGHT: snap_view = mResizingView->findSnapEdge(scaled_rect.mRight, mouse_dir, SNAP_RIGHT, SNAP_PARENT_AND_SIBLINGS, snap_margin); break; case BOTTOM: snap_view = mResizingView->findSnapEdge(scaled_rect.mBottom, mouse_dir, SNAP_BOTTOM, SNAP_PARENT_AND_SIBLINGS, snap_margin); break; } } // register "snap" behavior with snapped view mResizingView->setSnappedTo(snap_view); // restore original rectangle so the appropriate changes are detected mResizingView->setRect(orig_rect); // change view shape as user operation mResizingView->setShape(scaled_rect, true); // update last valid mouse cursor position based on resized view's actual size LLRect new_rect = mResizingView->getRect(); switch(mSide) { case LEFT: { S32 actual_delta_x = new_rect.mLeft - orig_rect.mLeft; if (actual_delta_x != delta_x) { // restore everything by left new_rect.mBottom = orig_rect.mBottom; new_rect.mTop = orig_rect.mTop; new_rect.mRight = orig_rect.mRight; mResizingView->setShape(new_rect, true); } mDragLastScreenX += actual_delta_x; break; } case RIGHT: { S32 actual_delta_x = new_rect.mRight - orig_rect.mRight; if (actual_delta_x != delta_x) { // restore everything by left new_rect.mBottom = orig_rect.mBottom; new_rect.mTop = orig_rect.mTop; new_rect.mLeft = orig_rect.mLeft; mResizingView->setShape(new_rect, true); } mDragLastScreenX += new_rect.mRight - orig_rect.mRight; break; } case TOP: { S32 actual_delta_y = new_rect.mTop - orig_rect.mTop; if (actual_delta_y != delta_y) { // restore everything by left new_rect.mBottom = orig_rect.mBottom; new_rect.mLeft = orig_rect.mLeft; new_rect.mRight = orig_rect.mRight; mResizingView->setShape(new_rect, true); } mDragLastScreenY += new_rect.mTop - orig_rect.mTop; break; } case BOTTOM: { S32 actual_delta_y = new_rect.mBottom - orig_rect.mBottom; if (actual_delta_y != delta_y) { // restore everything by left new_rect.mTop = orig_rect.mTop; new_rect.mLeft = orig_rect.mLeft; new_rect.mRight = orig_rect.mRight; mResizingView->setShape(new_rect, true); } mDragLastScreenY += new_rect.mBottom- orig_rect.mBottom; break; } default: break; } } handled = TRUE; } else { handled = TRUE; } if( handled && canResize() ) { switch( mSide ) { case LEFT: case RIGHT: getWindow()->setCursor(UI_CURSOR_SIZEWE); break; case TOP: case BOTTOM: getWindow()->setCursor(UI_CURSOR_SIZENS); break; } } if (mResizeListener) { mResizeListener(NULL); } return handled; } // end LLResizeBar::handleHover BOOL LLResizeBar::handleDoubleClick(S32 x, S32 y, MASK mask) { LLRect orig_rect = mResizingView->getRect(); LLRect scaled_rect = orig_rect; if (mSnappingEnabled && mAllowDoubleClickSnapping) { switch( mSide ) { case LEFT: mResizingView->findSnapEdge(scaled_rect.mLeft, LLCoordGL(0, 0), SNAP_LEFT, SNAP_PARENT_AND_SIBLINGS, S32_MAX); scaled_rect.mLeft = scaled_rect.mRight - llclamp(scaled_rect.getWidth(), mMinSize, mMaxSize); break; case TOP: mResizingView->findSnapEdge(scaled_rect.mTop, LLCoordGL(0, 0), SNAP_TOP, SNAP_PARENT_AND_SIBLINGS, S32_MAX); scaled_rect.mTop = scaled_rect.mBottom + llclamp(scaled_rect.getHeight(), mMinSize, mMaxSize); break; case RIGHT: mResizingView->findSnapEdge(scaled_rect.mRight, LLCoordGL(0, 0), SNAP_RIGHT, SNAP_PARENT_AND_SIBLINGS, S32_MAX); scaled_rect.mRight = scaled_rect.mLeft + llclamp(scaled_rect.getWidth(), mMinSize, mMaxSize); break; case BOTTOM: mResizingView->findSnapEdge(scaled_rect.mBottom, LLCoordGL(0, 0), SNAP_BOTTOM, SNAP_PARENT_AND_SIBLINGS, S32_MAX); scaled_rect.mBottom = scaled_rect.mTop - llclamp(scaled_rect.getHeight(), mMinSize, mMaxSize); break; } mResizingView->setShape(scaled_rect, true); } return TRUE; } void LLResizeBar::setImagePanel(LLPanel * panelp) { const LLView::child_list_t * children = getChildList(); if (getChildCount() == 2) { LLPanel * image_panelp = dynamic_cast<LLPanel*>(children->back()); if (image_panelp) { removeChild(image_panelp); delete image_panelp; } } addChild(panelp); sendChildToBack(panelp); } LLPanel * LLResizeBar::getImagePanel() const { return getChildCount() > 0 ? (LLPanel *)getChildList()->back() : NULL; }