diff options
Diffstat (limited to 'indra/llui/llscrollbar.cpp')
| -rw-r--r-- | indra/llui/llscrollbar.cpp | 1332 |
1 files changed, 666 insertions, 666 deletions
diff --git a/indra/llui/llscrollbar.cpp b/indra/llui/llscrollbar.cpp index 615df6977b..ab7d0bc38f 100644 --- a/indra/llui/llscrollbar.cpp +++ b/indra/llui/llscrollbar.cpp @@ -1,666 +1,666 @@ -/** - * @file llscrollbar.cpp - * @brief Scrollbar UI widget - * - * $LicenseInfo:firstyear=2001&license=viewerlgpl$ - * 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 "llscrollbar.h" - -#include "llmath.h" -#include "lltimer.h" -#include "v3color.h" - -#include "llbutton.h" -#include "llcriticaldamp.h" -#include "llkeyboard.h" -#include "llui.h" -#include "llfocusmgr.h" -#include "llwindow.h" -#include "llcontrol.h" -#include "llrender.h" -#include "lluictrlfactory.h" - -static LLDefaultChildRegistry::Register<LLScrollbar> register_scrollbar("scroll_bar"); - -LLScrollbar::Params::Params() -: orientation ("orientation", HORIZONTAL), - doc_size ("doc_size", 0), - doc_pos ("doc_pos", 0), - page_size ("page_size", 0), - step_size ("step_size", 1), - thumb_image_vertical("thumb_image_vertical"), - thumb_image_horizontal("thumb_image_horizontal"), - track_image_vertical("track_image_vertical"), - track_image_horizontal("track_image_horizontal"), - track_color("track_color"), - thumb_color("thumb_color"), - thickness("thickness"), - up_button("up_button"), - down_button("down_button"), - left_button("left_button"), - right_button("right_button"), - bg_visible("bg_visible", false), - bg_color("bg_color", LLColor4::black) -{} - -LLScrollbar::LLScrollbar(const Params & p) -: LLUICtrl(p), - mChangeCallback( p.change_callback() ), - mOrientation( p.orientation ), - mDocSize( p.doc_size ), - mDocPos( p.doc_pos ), - mPageSize( p.page_size ), - mStepSize( p.step_size ), - mDocChanged(false), - mDragStartX( 0 ), - mDragStartY( 0 ), - mHoverGlowStrength(0.15f), - mCurGlowStrength(0.f), - mTrackColor( p.track_color() ), - mThumbColor ( p.thumb_color() ), - mThumbImageV(p.thumb_image_vertical), - mThumbImageH(p.thumb_image_horizontal), - mTrackImageV(p.track_image_vertical), - mTrackImageH(p.track_image_horizontal), - mThickness(p.thickness.isProvided() ? p.thickness : LLUI::getInstance()->mSettingGroups["config"]->getS32("UIScrollbarSize")), - mBGVisible(p.bg_visible), - mBGColor(p.bg_color) -{ - updateThumbRect(); - - // Page up and page down buttons - LLRect line_up_rect; - LLRect line_down_rect; - - if( VERTICAL == mOrientation ) - { - line_up_rect.setLeftTopAndSize( 0, getRect().getHeight(), mThickness, mThickness ); - line_down_rect.setOriginAndSize( 0, 0, mThickness, mThickness ); - } - else // HORIZONTAL - { - line_up_rect.setOriginAndSize( 0, 0, mThickness, mThickness ); - line_down_rect.setOriginAndSize( getRect().getWidth() - mThickness, 0, mThickness, mThickness ); - } - - LLButton::Params up_btn(mOrientation == VERTICAL ? p.up_button : p.left_button); - up_btn.name(std::string("Line Up")); - up_btn.rect(line_up_rect); - up_btn.click_callback.function(boost::bind(&LLScrollbar::onLineUpBtnPressed, this, _2)); - up_btn.mouse_held_callback.function(boost::bind(&LLScrollbar::onLineUpBtnPressed, this, _2)); - up_btn.tab_stop(false); - up_btn.follows.flags = (mOrientation == VERTICAL ? (FOLLOWS_RIGHT | FOLLOWS_TOP) : (FOLLOWS_LEFT | FOLLOWS_BOTTOM)); - - addChild(LLUICtrlFactory::create<LLButton>(up_btn)); - - LLButton::Params down_btn(mOrientation == VERTICAL ? p.down_button : p.right_button); - down_btn.name(std::string("Line Down")); - down_btn.rect(line_down_rect); - down_btn.follows.flags(FOLLOWS_RIGHT|FOLLOWS_BOTTOM); - down_btn.click_callback.function(boost::bind(&LLScrollbar::onLineDownBtnPressed, this, _2)); - down_btn.mouse_held_callback.function(boost::bind(&LLScrollbar::onLineDownBtnPressed, this, _2)); - down_btn.tab_stop(false); - - addChild(LLUICtrlFactory::create<LLButton>(down_btn)); -} - - -LLScrollbar::~LLScrollbar() -{ - // Children buttons killed by parent class -} - -void LLScrollbar::setDocParams( S32 size, S32 pos ) -{ - mDocSize = size; - setDocPos(pos); - mDocChanged = true; - - updateThumbRect(); -} - -// returns true if document position really changed -bool LLScrollbar::setDocPos(S32 pos, bool update_thumb) -{ - pos = llclamp(pos, 0, getDocPosMax()); - if (pos != mDocPos) - { - mDocPos = pos; - mDocChanged = true; - - if( mChangeCallback ) - { - mChangeCallback( mDocPos, this ); - } - - if( update_thumb ) - { - updateThumbRect(); - } - return true; - } - return false; -} - -void LLScrollbar::setDocSize(S32 size) -{ - if (size != mDocSize) - { - mDocSize = size; - setDocPos(mDocPos); - mDocChanged = true; - - updateThumbRect(); - } -} - -void LLScrollbar::setPageSize( S32 page_size ) -{ - if (page_size != mPageSize) - { - mPageSize = page_size; - setDocPos(mDocPos); - mDocChanged = true; - - updateThumbRect(); - } -} - -bool LLScrollbar::isAtBeginning() const -{ - return mDocPos == 0; -} - -bool LLScrollbar::isAtEnd() const -{ - return mDocPos == getDocPosMax(); -} - - -void LLScrollbar::updateThumbRect() -{ -// llassert( 0 <= mDocSize ); -// llassert( 0 <= mDocPos && mDocPos <= getDocPosMax() ); - - const S32 THUMB_MIN_LENGTH = 16; - - S32 window_length = (mOrientation == LLScrollbar::HORIZONTAL) ? getRect().getWidth() : getRect().getHeight(); - S32 thumb_bg_length = llmax(0, window_length - 2 * mThickness); - S32 visible_lines = llmin( mDocSize, mPageSize ); - S32 thumb_length = mDocSize ? llmin(llmax( visible_lines * thumb_bg_length / mDocSize, THUMB_MIN_LENGTH), thumb_bg_length) : thumb_bg_length; - - S32 variable_lines = mDocSize - visible_lines; - - if( mOrientation == LLScrollbar::VERTICAL ) - { - S32 thumb_start_max = thumb_bg_length + mThickness; - S32 thumb_start_min = mThickness + THUMB_MIN_LENGTH; - S32 thumb_start = variable_lines ? llmin( llmax(thumb_start_max - (mDocPos * (thumb_bg_length - thumb_length)) / variable_lines, thumb_start_min), thumb_start_max ) : thumb_start_max; - - mThumbRect.mLeft = 0; - mThumbRect.mTop = thumb_start; - mThumbRect.mRight = mThickness; - mThumbRect.mBottom = thumb_start - thumb_length; - } - else - { - // Horizontal - S32 thumb_start_max = thumb_bg_length + mThickness - thumb_length; - S32 thumb_start_min = mThickness; - S32 thumb_start = variable_lines ? llmin(llmax( thumb_start_min + (mDocPos * (thumb_bg_length - thumb_length)) / variable_lines, thumb_start_min), thumb_start_max ) : thumb_start_min; - - mThumbRect.mLeft = thumb_start; - mThumbRect.mTop = mThickness; - mThumbRect.mRight = thumb_start + thumb_length; - mThumbRect.mBottom = 0; - } -} - -bool LLScrollbar::handleMouseDown(S32 x, S32 y, MASK mask) -{ - // Check children first - bool handled_by_child = LLView::childrenHandleMouseDown(x, y, mask) != NULL; - if( !handled_by_child ) - { - if( mThumbRect.pointInRect(x,y) ) - { - // Start dragging the thumb - // No handler needed for focus lost since this clas has no state that depends on it. - gFocusMgr.setMouseCapture( this ); - mDragStartX = x; - mDragStartY = y; - mOrigRect.mTop = mThumbRect.mTop; - mOrigRect.mBottom = mThumbRect.mBottom; - mOrigRect.mLeft = mThumbRect.mLeft; - mOrigRect.mRight = mThumbRect.mRight; - mLastDelta = 0; - } - else - { - if( - ( (LLScrollbar::VERTICAL == mOrientation) && (mThumbRect.mTop < y) ) || - ( (LLScrollbar::HORIZONTAL == mOrientation) && (x < mThumbRect.mLeft) ) - ) - { - // Page up - pageUp(0); - } - else - if( - ( (LLScrollbar::VERTICAL == mOrientation) && (y < mThumbRect.mBottom) ) || - ( (LLScrollbar::HORIZONTAL == mOrientation) && (mThumbRect.mRight < x) ) - ) - { - // Page down - pageDown(0); - } - } - } - - return true; -} - - -bool LLScrollbar::handleHover(S32 x, S32 y, MASK mask) -{ - // Note: we don't bother sending the event to the children (the arrow buttons) - // because they'll capture the mouse whenever they need hover events. - - bool handled = false; - if( hasMouseCapture() ) - { - S32 height = getRect().getHeight(); - S32 width = getRect().getWidth(); - - if( VERTICAL == mOrientation ) - { -// S32 old_pos = mThumbRect.mTop; - - S32 delta_pixels = y - mDragStartY; - if( mOrigRect.mBottom + delta_pixels < mThickness ) - { - delta_pixels = mThickness - mOrigRect.mBottom - 1; - } - else - if( mOrigRect.mTop + delta_pixels > height - mThickness ) - { - delta_pixels = height - mThickness - mOrigRect.mTop + 1; - } - - mThumbRect.mTop = mOrigRect.mTop + delta_pixels; - mThumbRect.mBottom = mOrigRect.mBottom + delta_pixels; - - S32 thumb_length = mThumbRect.getHeight(); - S32 thumb_track_length = height - 2 * mThickness; - - - if( delta_pixels != mLastDelta || mDocChanged) - { - // Note: delta_pixels increases as you go up. mDocPos increases down (line 0 is at the top of the page). - S32 usable_track_length = thumb_track_length - thumb_length; - if( 0 < usable_track_length ) - { - S32 variable_lines = getDocPosMax(); - S32 pos = mThumbRect.mTop; - F32 ratio = F32(pos - mThickness - thumb_length) / usable_track_length; - - S32 new_pos = llclamp( S32(variable_lines - ratio * variable_lines + 0.5f), 0, variable_lines ); - // Note: we do not call updateThumbRect() here. Instead we let the thumb and the document go slightly - // out of sync (less than a line's worth) to make the thumb feel responsive. - changeLine( new_pos - mDocPos, false ); - } - } - - mLastDelta = delta_pixels; - - } - else - { - // Horizontal -// S32 old_pos = mThumbRect.mLeft; - - S32 delta_pixels = x - mDragStartX; - - if( mOrigRect.mLeft + delta_pixels < mThickness ) - { - delta_pixels = mThickness - mOrigRect.mLeft - 1; - } - else - if( mOrigRect.mRight + delta_pixels > width - mThickness ) - { - delta_pixels = width - mThickness - mOrigRect.mRight + 1; - } - - mThumbRect.mLeft = mOrigRect.mLeft + delta_pixels; - mThumbRect.mRight = mOrigRect.mRight + delta_pixels; - - S32 thumb_length = mThumbRect.getWidth(); - S32 thumb_track_length = width - 2 * mThickness; - - if( delta_pixels != mLastDelta || mDocChanged) - { - // Note: delta_pixels increases as you go up. mDocPos increases down (line 0 is at the top of the page). - S32 usable_track_length = thumb_track_length - thumb_length; - if( 0 < usable_track_length ) - { - S32 variable_lines = getDocPosMax(); - S32 pos = mThumbRect.mLeft; - F32 ratio = F32(pos - mThickness) / usable_track_length; - - S32 new_pos = llclamp( S32(ratio * variable_lines + 0.5f), 0, variable_lines); - - // Note: we do not call updateThumbRect() here. Instead we let the thumb and the document go slightly - // out of sync (less than a line's worth) to make the thumb feel responsive. - changeLine( new_pos - mDocPos, false ); - } - } - - mLastDelta = delta_pixels; - } - - getWindow()->setCursor(UI_CURSOR_ARROW); - LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (active)" << LL_ENDL; - handled = true; - } - else - { - handled = childrenHandleHover( x, y, mask ) != NULL; - } - - // Opaque - if( !handled ) - { - getWindow()->setCursor(UI_CURSOR_ARROW); - LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (inactive)" << LL_ENDL; - handled = true; - } - - mDocChanged = false; - return handled; -} // end handleHover - - -bool LLScrollbar::handleScrollWheel(S32 x, S32 y, S32 clicks) -{ - bool handled = changeLine( clicks * mStepSize, true ); - return handled; -} - -bool LLScrollbar::handleScrollHWheel(S32 x, S32 y, S32 clicks) -{ - bool handled = false; - if (LLScrollbar::HORIZONTAL == mOrientation) - { - handled = changeLine(clicks * mStepSize, true); - } - return handled; -} - -bool LLScrollbar::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop, - EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string &tooltip_msg) -{ - // enable this to get drag and drop to control scrollbars - //if (!drop) - //{ - // //TODO: refactor this - // S32 variable_lines = getDocPosMax(); - // S32 pos = (VERTICAL == mOrientation) ? y : x; - // S32 thumb_length = (VERTICAL == mOrientation) ? mThumbRect.getHeight() : mThumbRect.getWidth(); - // S32 thumb_track_length = (VERTICAL == mOrientation) ? (getRect().getHeight() - 2 * SCROLLBAR_SIZE) : (getRect().getWidth() - 2 * SCROLLBAR_SIZE); - // S32 usable_track_length = thumb_track_length - thumb_length; - // F32 ratio = (VERTICAL == mOrientation) ? F32(pos - SCROLLBAR_SIZE - thumb_length) / usable_track_length - // : F32(pos - SCROLLBAR_SIZE) / usable_track_length; - // S32 new_pos = (VERTICAL == mOrientation) ? llclamp( S32(variable_lines - ratio * variable_lines + 0.5f), 0, variable_lines ) - // : llclamp( S32(ratio * variable_lines + 0.5f), 0, variable_lines ); - // changeLine( new_pos - mDocPos, true ); - //} - //return true; - return false; -} - -bool LLScrollbar::handleMouseUp(S32 x, S32 y, MASK mask) -{ - bool handled = false; - if( hasMouseCapture() ) - { - gFocusMgr.setMouseCapture( NULL ); - handled = true; - } - else - { - // Opaque, so don't just check children - handled = LLView::handleMouseUp( x, y, mask ); - } - - return handled; -} - -bool LLScrollbar::handleDoubleClick(S32 x, S32 y, MASK mask) -{ - // just treat a double click as a second click - return handleMouseDown(x, y, mask); -} - - -void LLScrollbar::reshape(S32 width, S32 height, bool called_from_parent) -{ - if (width == getRect().getWidth() && height == getRect().getHeight()) return; - LLView::reshape( width, height, called_from_parent ); - LLButton* up_button = getChild<LLButton>("Line Up"); - LLButton* down_button = getChild<LLButton>("Line Down"); - - if (mOrientation == VERTICAL) - { - up_button->reshape(up_button->getRect().getWidth(), llmin(getRect().getHeight() / 2, mThickness)); - down_button->reshape(down_button->getRect().getWidth(), llmin(getRect().getHeight() / 2, mThickness)); - up_button->setOrigin(0, getRect().getHeight() - up_button->getRect().getHeight()); - down_button->setOrigin(0, 0); - } - else - { - up_button->reshape(llmin(getRect().getWidth() / 2, mThickness), up_button->getRect().getHeight()); - down_button->reshape(llmin(getRect().getWidth() / 2, mThickness), down_button->getRect().getHeight()); - up_button->setOrigin(0, 0); - down_button->setOrigin(getRect().getWidth() - down_button->getRect().getWidth(), 0); - } - updateThumbRect(); -} - - -void LLScrollbar::draw() -{ - if (!getRect().isValid()) return; - - if(mBGVisible) - { - gl_rect_2d(getLocalRect(), mBGColor.get(), true); - } - - S32 local_mouse_x; - S32 local_mouse_y; - LLUI::getInstance()->getMousePositionLocal(this, &local_mouse_x, &local_mouse_y); - bool other_captor = gFocusMgr.getMouseCapture() && gFocusMgr.getMouseCapture() != this; - bool hovered = getEnabled() && !other_captor && (hasMouseCapture() || mThumbRect.pointInRect(local_mouse_x, local_mouse_y)); - if (hovered) - { - mCurGlowStrength = lerp(mCurGlowStrength, mHoverGlowStrength, LLSmoothInterpolation::getInterpolant(0.05f)); - } - else - { - mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLSmoothInterpolation::getInterpolant(0.05f)); - } - - // Draw background and thumb. - if ( ( mOrientation == VERTICAL&&(mThumbImageV.isNull() || mThumbImageH.isNull()) ) - || (mOrientation == HORIZONTAL&&(mTrackImageH.isNull() || mTrackImageV.isNull()) )) - { - gl_rect_2d(mOrientation == HORIZONTAL ? mThickness : 0, - mOrientation == VERTICAL ? getRect().getHeight() - 2 * mThickness : getRect().getHeight(), - mOrientation == HORIZONTAL ? getRect().getWidth() - 2 * mThickness : getRect().getWidth(), - mOrientation == VERTICAL ? mThickness : 0, mTrackColor.get(), true); - - gl_rect_2d(mThumbRect, mThumbColor.get(), true); - - } - else - { - // Thumb - LLRect outline_rect = mThumbRect; - outline_rect.stretch(2); - // Background - - if(mOrientation == HORIZONTAL) - { - mTrackImageH->drawSolid(mThickness //S32 x - , 0 //S32 y - , getRect().getWidth() - 2 * mThickness //S32 width - , getRect().getHeight() //S32 height - , mTrackColor.get()); //const LLColor4& color - - if (gFocusMgr.getKeyboardFocus() == this) - { - mTrackImageH->draw(outline_rect, gFocusMgr.getFocusColor()); - } - - mThumbImageH->draw(mThumbRect, mThumbColor.get()); - if (mCurGlowStrength > 0.01f) - { - gGL.setSceneBlendType(LLRender::BT_ADD_WITH_ALPHA); - mThumbImageH->drawSolid(mThumbRect, LLColor4(1.f, 1.f, 1.f, mCurGlowStrength)); - gGL.setSceneBlendType(LLRender::BT_ALPHA); - } - - } - else if(mOrientation == VERTICAL) - { - mTrackImageV->drawSolid( 0 //S32 x - , mThickness //S32 y - , getRect().getWidth() //S32 width - , getRect().getHeight() - 2 * mThickness //S32 height - , mTrackColor.get()); //const LLColor4& color - if (gFocusMgr.getKeyboardFocus() == this) - { - mTrackImageV->draw(outline_rect, gFocusMgr.getFocusColor()); - } - - mThumbImageV->draw(mThumbRect, mThumbColor.get()); - if (mCurGlowStrength > 0.01f) - { - gGL.setSceneBlendType(LLRender::BT_ADD_WITH_ALPHA); - mThumbImageV->drawSolid(mThumbRect, LLColor4(1.f, 1.f, 1.f, mCurGlowStrength)); - gGL.setSceneBlendType(LLRender::BT_ALPHA); - } - } - } - - // Draw children - LLView::draw(); -} // end draw - - -bool LLScrollbar::changeLine( S32 delta, bool update_thumb ) -{ - return setDocPos(mDocPos + delta, update_thumb); -} - -void LLScrollbar::setValue(const LLSD& value) -{ - setDocPos((S32) value.asInteger()); -} - - -bool LLScrollbar::handleKeyHere(KEY key, MASK mask) -{ - if (getDocPosMax() == 0 && !getVisible()) - { - return false; - } - - bool handled = false; - - switch( key ) - { - case KEY_HOME: - setDocPos( 0 ); - handled = true; - break; - - case KEY_END: - setDocPos( getDocPosMax() ); - handled = true; - break; - - case KEY_DOWN: - setDocPos( getDocPos() + mStepSize ); - handled = true; - break; - - case KEY_UP: - setDocPos( getDocPos() - mStepSize ); - handled = true; - break; - - case KEY_PAGE_DOWN: - pageDown(1); - break; - - case KEY_PAGE_UP: - pageUp(1); - break; - } - - return handled; -} - -void LLScrollbar::pageUp(S32 overlap) -{ - if (mDocSize > mPageSize) - { - changeLine( -(mPageSize - overlap), true ); - } -} - -void LLScrollbar::pageDown(S32 overlap) -{ - if (mDocSize > mPageSize) - { - changeLine( mPageSize - overlap, true ); - } -} - -void LLScrollbar::onLineUpBtnPressed( const LLSD& data ) -{ - changeLine( -mStepSize, true ); -} - -void LLScrollbar::onLineDownBtnPressed( const LLSD& data ) -{ - changeLine( mStepSize, true ); -} - -void LLScrollbar::setThickness(S32 thickness) -{ - mThickness = thickness < 0 ? LLUI::getInstance()->mSettingGroups["config"]->getS32("UIScrollbarSize") : thickness; -} +/**
+ * @file llscrollbar.cpp
+ * @brief Scrollbar UI widget
+ *
+ * $LicenseInfo:firstyear=2001&license=viewerlgpl$
+ * 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 "llscrollbar.h"
+
+#include "llmath.h"
+#include "lltimer.h"
+#include "v3color.h"
+
+#include "llbutton.h"
+#include "llcriticaldamp.h"
+#include "llkeyboard.h"
+#include "llui.h"
+#include "llfocusmgr.h"
+#include "llwindow.h"
+#include "llcontrol.h"
+#include "llrender.h"
+#include "lluictrlfactory.h"
+
+static LLDefaultChildRegistry::Register<LLScrollbar> register_scrollbar("scroll_bar");
+
+LLScrollbar::Params::Params()
+: orientation ("orientation", HORIZONTAL),
+ doc_size ("doc_size", 0),
+ doc_pos ("doc_pos", 0),
+ page_size ("page_size", 0),
+ step_size ("step_size", 1),
+ thumb_image_vertical("thumb_image_vertical"),
+ thumb_image_horizontal("thumb_image_horizontal"),
+ track_image_vertical("track_image_vertical"),
+ track_image_horizontal("track_image_horizontal"),
+ track_color("track_color"),
+ thumb_color("thumb_color"),
+ thickness("thickness"),
+ up_button("up_button"),
+ down_button("down_button"),
+ left_button("left_button"),
+ right_button("right_button"),
+ bg_visible("bg_visible", false),
+ bg_color("bg_color", LLColor4::black)
+{}
+
+LLScrollbar::LLScrollbar(const Params & p)
+: LLUICtrl(p),
+ mChangeCallback( p.change_callback() ),
+ mOrientation( p.orientation ),
+ mDocSize( p.doc_size ),
+ mDocPos( p.doc_pos ),
+ mPageSize( p.page_size ),
+ mStepSize( p.step_size ),
+ mDocChanged(false),
+ mDragStartX( 0 ),
+ mDragStartY( 0 ),
+ mHoverGlowStrength(0.15f),
+ mCurGlowStrength(0.f),
+ mTrackColor( p.track_color() ),
+ mThumbColor ( p.thumb_color() ),
+ mThumbImageV(p.thumb_image_vertical),
+ mThumbImageH(p.thumb_image_horizontal),
+ mTrackImageV(p.track_image_vertical),
+ mTrackImageH(p.track_image_horizontal),
+ mThickness(p.thickness.isProvided() ? p.thickness : LLUI::getInstance()->mSettingGroups["config"]->getS32("UIScrollbarSize")),
+ mBGVisible(p.bg_visible),
+ mBGColor(p.bg_color)
+{
+ updateThumbRect();
+
+ // Page up and page down buttons
+ LLRect line_up_rect;
+ LLRect line_down_rect;
+
+ if( VERTICAL == mOrientation )
+ {
+ line_up_rect.setLeftTopAndSize( 0, getRect().getHeight(), mThickness, mThickness );
+ line_down_rect.setOriginAndSize( 0, 0, mThickness, mThickness );
+ }
+ else // HORIZONTAL
+ {
+ line_up_rect.setOriginAndSize( 0, 0, mThickness, mThickness );
+ line_down_rect.setOriginAndSize( getRect().getWidth() - mThickness, 0, mThickness, mThickness );
+ }
+
+ LLButton::Params up_btn(mOrientation == VERTICAL ? p.up_button : p.left_button);
+ up_btn.name(std::string("Line Up"));
+ up_btn.rect(line_up_rect);
+ up_btn.click_callback.function(boost::bind(&LLScrollbar::onLineUpBtnPressed, this, _2));
+ up_btn.mouse_held_callback.function(boost::bind(&LLScrollbar::onLineUpBtnPressed, this, _2));
+ up_btn.tab_stop(false);
+ up_btn.follows.flags = (mOrientation == VERTICAL ? (FOLLOWS_RIGHT | FOLLOWS_TOP) : (FOLLOWS_LEFT | FOLLOWS_BOTTOM));
+
+ addChild(LLUICtrlFactory::create<LLButton>(up_btn));
+
+ LLButton::Params down_btn(mOrientation == VERTICAL ? p.down_button : p.right_button);
+ down_btn.name(std::string("Line Down"));
+ down_btn.rect(line_down_rect);
+ down_btn.follows.flags(FOLLOWS_RIGHT|FOLLOWS_BOTTOM);
+ down_btn.click_callback.function(boost::bind(&LLScrollbar::onLineDownBtnPressed, this, _2));
+ down_btn.mouse_held_callback.function(boost::bind(&LLScrollbar::onLineDownBtnPressed, this, _2));
+ down_btn.tab_stop(false);
+
+ addChild(LLUICtrlFactory::create<LLButton>(down_btn));
+}
+
+
+LLScrollbar::~LLScrollbar()
+{
+ // Children buttons killed by parent class
+}
+
+void LLScrollbar::setDocParams( S32 size, S32 pos )
+{
+ mDocSize = size;
+ setDocPos(pos);
+ mDocChanged = true;
+
+ updateThumbRect();
+}
+
+// returns true if document position really changed
+bool LLScrollbar::setDocPos(S32 pos, bool update_thumb)
+{
+ pos = llclamp(pos, 0, getDocPosMax());
+ if (pos != mDocPos)
+ {
+ mDocPos = pos;
+ mDocChanged = true;
+
+ if( mChangeCallback )
+ {
+ mChangeCallback( mDocPos, this );
+ }
+
+ if( update_thumb )
+ {
+ updateThumbRect();
+ }
+ return true;
+ }
+ return false;
+}
+
+void LLScrollbar::setDocSize(S32 size)
+{
+ if (size != mDocSize)
+ {
+ mDocSize = size;
+ setDocPos(mDocPos);
+ mDocChanged = true;
+
+ updateThumbRect();
+ }
+}
+
+void LLScrollbar::setPageSize( S32 page_size )
+{
+ if (page_size != mPageSize)
+ {
+ mPageSize = page_size;
+ setDocPos(mDocPos);
+ mDocChanged = true;
+
+ updateThumbRect();
+ }
+}
+
+bool LLScrollbar::isAtBeginning() const
+{
+ return mDocPos == 0;
+}
+
+bool LLScrollbar::isAtEnd() const
+{
+ return mDocPos == getDocPosMax();
+}
+
+
+void LLScrollbar::updateThumbRect()
+{
+// llassert( 0 <= mDocSize );
+// llassert( 0 <= mDocPos && mDocPos <= getDocPosMax() );
+
+ const S32 THUMB_MIN_LENGTH = 16;
+
+ S32 window_length = (mOrientation == LLScrollbar::HORIZONTAL) ? getRect().getWidth() : getRect().getHeight();
+ S32 thumb_bg_length = llmax(0, window_length - 2 * mThickness);
+ S32 visible_lines = llmin( mDocSize, mPageSize );
+ S32 thumb_length = mDocSize ? llmin(llmax( visible_lines * thumb_bg_length / mDocSize, THUMB_MIN_LENGTH), thumb_bg_length) : thumb_bg_length;
+
+ S32 variable_lines = mDocSize - visible_lines;
+
+ if( mOrientation == LLScrollbar::VERTICAL )
+ {
+ S32 thumb_start_max = thumb_bg_length + mThickness;
+ S32 thumb_start_min = mThickness + THUMB_MIN_LENGTH;
+ S32 thumb_start = variable_lines ? llmin( llmax(thumb_start_max - (mDocPos * (thumb_bg_length - thumb_length)) / variable_lines, thumb_start_min), thumb_start_max ) : thumb_start_max;
+
+ mThumbRect.mLeft = 0;
+ mThumbRect.mTop = thumb_start;
+ mThumbRect.mRight = mThickness;
+ mThumbRect.mBottom = thumb_start - thumb_length;
+ }
+ else
+ {
+ // Horizontal
+ S32 thumb_start_max = thumb_bg_length + mThickness - thumb_length;
+ S32 thumb_start_min = mThickness;
+ S32 thumb_start = variable_lines ? llmin(llmax( thumb_start_min + (mDocPos * (thumb_bg_length - thumb_length)) / variable_lines, thumb_start_min), thumb_start_max ) : thumb_start_min;
+
+ mThumbRect.mLeft = thumb_start;
+ mThumbRect.mTop = mThickness;
+ mThumbRect.mRight = thumb_start + thumb_length;
+ mThumbRect.mBottom = 0;
+ }
+}
+
+bool LLScrollbar::handleMouseDown(S32 x, S32 y, MASK mask)
+{
+ // Check children first
+ bool handled_by_child = LLView::childrenHandleMouseDown(x, y, mask) != NULL;
+ if( !handled_by_child )
+ {
+ if( mThumbRect.pointInRect(x,y) )
+ {
+ // Start dragging the thumb
+ // No handler needed for focus lost since this clas has no state that depends on it.
+ gFocusMgr.setMouseCapture( this );
+ mDragStartX = x;
+ mDragStartY = y;
+ mOrigRect.mTop = mThumbRect.mTop;
+ mOrigRect.mBottom = mThumbRect.mBottom;
+ mOrigRect.mLeft = mThumbRect.mLeft;
+ mOrigRect.mRight = mThumbRect.mRight;
+ mLastDelta = 0;
+ }
+ else
+ {
+ if(
+ ( (LLScrollbar::VERTICAL == mOrientation) && (mThumbRect.mTop < y) ) ||
+ ( (LLScrollbar::HORIZONTAL == mOrientation) && (x < mThumbRect.mLeft) )
+ )
+ {
+ // Page up
+ pageUp(0);
+ }
+ else
+ if(
+ ( (LLScrollbar::VERTICAL == mOrientation) && (y < mThumbRect.mBottom) ) ||
+ ( (LLScrollbar::HORIZONTAL == mOrientation) && (mThumbRect.mRight < x) )
+ )
+ {
+ // Page down
+ pageDown(0);
+ }
+ }
+ }
+
+ return true;
+}
+
+
+bool LLScrollbar::handleHover(S32 x, S32 y, MASK mask)
+{
+ // Note: we don't bother sending the event to the children (the arrow buttons)
+ // because they'll capture the mouse whenever they need hover events.
+
+ bool handled = false;
+ if( hasMouseCapture() )
+ {
+ S32 height = getRect().getHeight();
+ S32 width = getRect().getWidth();
+
+ if( VERTICAL == mOrientation )
+ {
+// S32 old_pos = mThumbRect.mTop;
+
+ S32 delta_pixels = y - mDragStartY;
+ if( mOrigRect.mBottom + delta_pixels < mThickness )
+ {
+ delta_pixels = mThickness - mOrigRect.mBottom - 1;
+ }
+ else
+ if( mOrigRect.mTop + delta_pixels > height - mThickness )
+ {
+ delta_pixels = height - mThickness - mOrigRect.mTop + 1;
+ }
+
+ mThumbRect.mTop = mOrigRect.mTop + delta_pixels;
+ mThumbRect.mBottom = mOrigRect.mBottom + delta_pixels;
+
+ S32 thumb_length = mThumbRect.getHeight();
+ S32 thumb_track_length = height - 2 * mThickness;
+
+
+ if( delta_pixels != mLastDelta || mDocChanged)
+ {
+ // Note: delta_pixels increases as you go up. mDocPos increases down (line 0 is at the top of the page).
+ S32 usable_track_length = thumb_track_length - thumb_length;
+ if( 0 < usable_track_length )
+ {
+ S32 variable_lines = getDocPosMax();
+ S32 pos = mThumbRect.mTop;
+ F32 ratio = F32(pos - mThickness - thumb_length) / usable_track_length;
+
+ S32 new_pos = llclamp( S32(variable_lines - ratio * variable_lines + 0.5f), 0, variable_lines );
+ // Note: we do not call updateThumbRect() here. Instead we let the thumb and the document go slightly
+ // out of sync (less than a line's worth) to make the thumb feel responsive.
+ changeLine( new_pos - mDocPos, false );
+ }
+ }
+
+ mLastDelta = delta_pixels;
+
+ }
+ else
+ {
+ // Horizontal
+// S32 old_pos = mThumbRect.mLeft;
+
+ S32 delta_pixels = x - mDragStartX;
+
+ if( mOrigRect.mLeft + delta_pixels < mThickness )
+ {
+ delta_pixels = mThickness - mOrigRect.mLeft - 1;
+ }
+ else
+ if( mOrigRect.mRight + delta_pixels > width - mThickness )
+ {
+ delta_pixels = width - mThickness - mOrigRect.mRight + 1;
+ }
+
+ mThumbRect.mLeft = mOrigRect.mLeft + delta_pixels;
+ mThumbRect.mRight = mOrigRect.mRight + delta_pixels;
+
+ S32 thumb_length = mThumbRect.getWidth();
+ S32 thumb_track_length = width - 2 * mThickness;
+
+ if( delta_pixels != mLastDelta || mDocChanged)
+ {
+ // Note: delta_pixels increases as you go up. mDocPos increases down (line 0 is at the top of the page).
+ S32 usable_track_length = thumb_track_length - thumb_length;
+ if( 0 < usable_track_length )
+ {
+ S32 variable_lines = getDocPosMax();
+ S32 pos = mThumbRect.mLeft;
+ F32 ratio = F32(pos - mThickness) / usable_track_length;
+
+ S32 new_pos = llclamp( S32(ratio * variable_lines + 0.5f), 0, variable_lines);
+
+ // Note: we do not call updateThumbRect() here. Instead we let the thumb and the document go slightly
+ // out of sync (less than a line's worth) to make the thumb feel responsive.
+ changeLine( new_pos - mDocPos, false );
+ }
+ }
+
+ mLastDelta = delta_pixels;
+ }
+
+ getWindow()->setCursor(UI_CURSOR_ARROW);
+ LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (active)" << LL_ENDL;
+ handled = true;
+ }
+ else
+ {
+ handled = childrenHandleHover( x, y, mask ) != NULL;
+ }
+
+ // Opaque
+ if( !handled )
+ {
+ getWindow()->setCursor(UI_CURSOR_ARROW);
+ LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (inactive)" << LL_ENDL;
+ handled = true;
+ }
+
+ mDocChanged = false;
+ return handled;
+} // end handleHover
+
+
+bool LLScrollbar::handleScrollWheel(S32 x, S32 y, S32 clicks)
+{
+ bool handled = changeLine( clicks * mStepSize, true );
+ return handled;
+}
+
+bool LLScrollbar::handleScrollHWheel(S32 x, S32 y, S32 clicks)
+{
+ bool handled = false;
+ if (LLScrollbar::HORIZONTAL == mOrientation)
+ {
+ handled = changeLine(clicks * mStepSize, true);
+ }
+ return handled;
+}
+
+bool LLScrollbar::handleDragAndDrop(S32 x, S32 y, MASK mask, bool drop,
+ EDragAndDropType cargo_type, void *cargo_data, EAcceptance *accept, std::string &tooltip_msg)
+{
+ // enable this to get drag and drop to control scrollbars
+ //if (!drop)
+ //{
+ // //TODO: refactor this
+ // S32 variable_lines = getDocPosMax();
+ // S32 pos = (VERTICAL == mOrientation) ? y : x;
+ // S32 thumb_length = (VERTICAL == mOrientation) ? mThumbRect.getHeight() : mThumbRect.getWidth();
+ // S32 thumb_track_length = (VERTICAL == mOrientation) ? (getRect().getHeight() - 2 * SCROLLBAR_SIZE) : (getRect().getWidth() - 2 * SCROLLBAR_SIZE);
+ // S32 usable_track_length = thumb_track_length - thumb_length;
+ // F32 ratio = (VERTICAL == mOrientation) ? F32(pos - SCROLLBAR_SIZE - thumb_length) / usable_track_length
+ // : F32(pos - SCROLLBAR_SIZE) / usable_track_length;
+ // S32 new_pos = (VERTICAL == mOrientation) ? llclamp( S32(variable_lines - ratio * variable_lines + 0.5f), 0, variable_lines )
+ // : llclamp( S32(ratio * variable_lines + 0.5f), 0, variable_lines );
+ // changeLine( new_pos - mDocPos, true );
+ //}
+ //return true;
+ return false;
+}
+
+bool LLScrollbar::handleMouseUp(S32 x, S32 y, MASK mask)
+{
+ bool handled = false;
+ if( hasMouseCapture() )
+ {
+ gFocusMgr.setMouseCapture( NULL );
+ handled = true;
+ }
+ else
+ {
+ // Opaque, so don't just check children
+ handled = LLView::handleMouseUp( x, y, mask );
+ }
+
+ return handled;
+}
+
+bool LLScrollbar::handleDoubleClick(S32 x, S32 y, MASK mask)
+{
+ // just treat a double click as a second click
+ return handleMouseDown(x, y, mask);
+}
+
+
+void LLScrollbar::reshape(S32 width, S32 height, bool called_from_parent)
+{
+ if (width == getRect().getWidth() && height == getRect().getHeight()) return;
+ LLView::reshape( width, height, called_from_parent );
+ LLButton* up_button = getChild<LLButton>("Line Up");
+ LLButton* down_button = getChild<LLButton>("Line Down");
+
+ if (mOrientation == VERTICAL)
+ {
+ up_button->reshape(up_button->getRect().getWidth(), llmin(getRect().getHeight() / 2, mThickness));
+ down_button->reshape(down_button->getRect().getWidth(), llmin(getRect().getHeight() / 2, mThickness));
+ up_button->setOrigin(0, getRect().getHeight() - up_button->getRect().getHeight());
+ down_button->setOrigin(0, 0);
+ }
+ else
+ {
+ up_button->reshape(llmin(getRect().getWidth() / 2, mThickness), up_button->getRect().getHeight());
+ down_button->reshape(llmin(getRect().getWidth() / 2, mThickness), down_button->getRect().getHeight());
+ up_button->setOrigin(0, 0);
+ down_button->setOrigin(getRect().getWidth() - down_button->getRect().getWidth(), 0);
+ }
+ updateThumbRect();
+}
+
+
+void LLScrollbar::draw()
+{
+ if (!getRect().isValid()) return;
+
+ if(mBGVisible)
+ {
+ gl_rect_2d(getLocalRect(), mBGColor.get(), true);
+ }
+
+ S32 local_mouse_x;
+ S32 local_mouse_y;
+ LLUI::getInstance()->getMousePositionLocal(this, &local_mouse_x, &local_mouse_y);
+ bool other_captor = gFocusMgr.getMouseCapture() && gFocusMgr.getMouseCapture() != this;
+ bool hovered = getEnabled() && !other_captor && (hasMouseCapture() || mThumbRect.pointInRect(local_mouse_x, local_mouse_y));
+ if (hovered)
+ {
+ mCurGlowStrength = lerp(mCurGlowStrength, mHoverGlowStrength, LLSmoothInterpolation::getInterpolant(0.05f));
+ }
+ else
+ {
+ mCurGlowStrength = lerp(mCurGlowStrength, 0.f, LLSmoothInterpolation::getInterpolant(0.05f));
+ }
+
+ // Draw background and thumb.
+ if ( ( mOrientation == VERTICAL&&(mThumbImageV.isNull() || mThumbImageH.isNull()) )
+ || (mOrientation == HORIZONTAL&&(mTrackImageH.isNull() || mTrackImageV.isNull()) ))
+ {
+ gl_rect_2d(mOrientation == HORIZONTAL ? mThickness : 0,
+ mOrientation == VERTICAL ? getRect().getHeight() - 2 * mThickness : getRect().getHeight(),
+ mOrientation == HORIZONTAL ? getRect().getWidth() - 2 * mThickness : getRect().getWidth(),
+ mOrientation == VERTICAL ? mThickness : 0, mTrackColor.get(), true);
+
+ gl_rect_2d(mThumbRect, mThumbColor.get(), true);
+
+ }
+ else
+ {
+ // Thumb
+ LLRect outline_rect = mThumbRect;
+ outline_rect.stretch(2);
+ // Background
+
+ if(mOrientation == HORIZONTAL)
+ {
+ mTrackImageH->drawSolid(mThickness //S32 x
+ , 0 //S32 y
+ , getRect().getWidth() - 2 * mThickness //S32 width
+ , getRect().getHeight() //S32 height
+ , mTrackColor.get()); //const LLColor4& color
+
+ if (gFocusMgr.getKeyboardFocus() == this)
+ {
+ mTrackImageH->draw(outline_rect, gFocusMgr.getFocusColor());
+ }
+
+ mThumbImageH->draw(mThumbRect, mThumbColor.get());
+ if (mCurGlowStrength > 0.01f)
+ {
+ gGL.setSceneBlendType(LLRender::BT_ADD_WITH_ALPHA);
+ mThumbImageH->drawSolid(mThumbRect, LLColor4(1.f, 1.f, 1.f, mCurGlowStrength));
+ gGL.setSceneBlendType(LLRender::BT_ALPHA);
+ }
+
+ }
+ else if(mOrientation == VERTICAL)
+ {
+ mTrackImageV->drawSolid( 0 //S32 x
+ , mThickness //S32 y
+ , getRect().getWidth() //S32 width
+ , getRect().getHeight() - 2 * mThickness //S32 height
+ , mTrackColor.get()); //const LLColor4& color
+ if (gFocusMgr.getKeyboardFocus() == this)
+ {
+ mTrackImageV->draw(outline_rect, gFocusMgr.getFocusColor());
+ }
+
+ mThumbImageV->draw(mThumbRect, mThumbColor.get());
+ if (mCurGlowStrength > 0.01f)
+ {
+ gGL.setSceneBlendType(LLRender::BT_ADD_WITH_ALPHA);
+ mThumbImageV->drawSolid(mThumbRect, LLColor4(1.f, 1.f, 1.f, mCurGlowStrength));
+ gGL.setSceneBlendType(LLRender::BT_ALPHA);
+ }
+ }
+ }
+
+ // Draw children
+ LLView::draw();
+} // end draw
+
+
+bool LLScrollbar::changeLine( S32 delta, bool update_thumb )
+{
+ return setDocPos(mDocPos + delta, update_thumb);
+}
+
+void LLScrollbar::setValue(const LLSD& value)
+{
+ setDocPos((S32) value.asInteger());
+}
+
+
+bool LLScrollbar::handleKeyHere(KEY key, MASK mask)
+{
+ if (getDocPosMax() == 0 && !getVisible())
+ {
+ return false;
+ }
+
+ bool handled = false;
+
+ switch( key )
+ {
+ case KEY_HOME:
+ setDocPos( 0 );
+ handled = true;
+ break;
+
+ case KEY_END:
+ setDocPos( getDocPosMax() );
+ handled = true;
+ break;
+
+ case KEY_DOWN:
+ setDocPos( getDocPos() + mStepSize );
+ handled = true;
+ break;
+
+ case KEY_UP:
+ setDocPos( getDocPos() - mStepSize );
+ handled = true;
+ break;
+
+ case KEY_PAGE_DOWN:
+ pageDown(1);
+ break;
+
+ case KEY_PAGE_UP:
+ pageUp(1);
+ break;
+ }
+
+ return handled;
+}
+
+void LLScrollbar::pageUp(S32 overlap)
+{
+ if (mDocSize > mPageSize)
+ {
+ changeLine( -(mPageSize - overlap), true );
+ }
+}
+
+void LLScrollbar::pageDown(S32 overlap)
+{
+ if (mDocSize > mPageSize)
+ {
+ changeLine( mPageSize - overlap, true );
+ }
+}
+
+void LLScrollbar::onLineUpBtnPressed( const LLSD& data )
+{
+ changeLine( -mStepSize, true );
+}
+
+void LLScrollbar::onLineDownBtnPressed( const LLSD& data )
+{
+ changeLine( mStepSize, true );
+}
+
+void LLScrollbar::setThickness(S32 thickness)
+{
+ mThickness = thickness < 0 ? LLUI::getInstance()->mSettingGroups["config"]->getS32("UIScrollbarSize") : thickness;
+}
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