llslider.cpp
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- /**
- * @file llslider.cpp
- * @brief LLSlider base class
- *
- * $LicenseInfo:firstyear=2002&license=viewergpl$
- *
- * Copyright (c) 2002-2010, Linden Research, Inc.
- *
- * Second Life Viewer Source Code
- * The source code in this file ("Source Code") is provided by Linden Lab
- * to you under the terms of the GNU General Public License, version 2.0
- * ("GPL"), unless you have obtained a separate licensing agreement
- * ("Other License"), formally executed by you and Linden Lab. Terms of
- * the GPL can be found in doc/GPL-license.txt in this distribution, or
- * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
- *
- * There are special exceptions to the terms and conditions of the GPL as
- * it is applied to this Source Code. View the full text of the exception
- * in the file doc/FLOSS-exception.txt in this software distribution, or
- * online at
- * http://secondlifegrid.net/programs/open_source/licensing/flossexception
- *
- * By copying, modifying or distributing this software, you acknowledge
- * that you have read and understood your obligations described above,
- * and agree to abide by those obligations.
- *
- * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
- * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
- * COMPLETENESS OR PERFORMANCE.
- * $/LicenseInfo$
- */
- #include "linden_common.h"
- #include "llslider.h"
- #include "llui.h"
- #include "llgl.h"
- #include "llwindow.h"
- #include "llfocusmgr.h"
- #include "llkeyboard.h" // for the MASK constants
- #include "llcontrol.h"
- #include "lluictrlfactory.h"
- static LLDefaultChildRegistry::Register<LLSlider> r1("slider_bar");
- //FIXME: make this into an unregistered template so that code constructed sliders don't
- // have ambigious template lookup problem
- LLSlider::Params::Params()
- : orientation ("orientation", std::string ("horizontal")),
- track_color("track_color"),
- thumb_outline_color("thumb_outline_color"),
- thumb_center_color("thumb_center_color"),
- thumb_image("thumb_image"),
- thumb_image_pressed("thumb_image_pressed"),
- thumb_image_disabled("thumb_image_disabled"),
- track_image_horizontal("track_image_horizontal"),
- track_image_vertical("track_image_vertical"),
- track_highlight_horizontal_image("track_highlight_horizontal_image"),
- track_highlight_vertical_image("track_highlight_vertical_image"),
- mouse_down_callback("mouse_down_callback"),
- mouse_up_callback("mouse_up_callback")
- {
- follows.flags(FOLLOWS_LEFT | FOLLOWS_TOP);
- }
- LLSlider::LLSlider(const LLSlider::Params& p)
- : LLF32UICtrl(p),
- mMouseOffset( 0 ),
- mOrientation ((p.orientation() == "horizontal") ? HORIZONTAL : VERTICAL),
- mTrackColor(p.track_color()),
- mThumbOutlineColor(p.thumb_outline_color()),
- mThumbCenterColor(p.thumb_center_color()),
- mThumbImage(p.thumb_image),
- mThumbImagePressed(p.thumb_image_pressed),
- mThumbImageDisabled(p.thumb_image_disabled),
- mTrackImageHorizontal(p.track_image_horizontal),
- mTrackImageVertical(p.track_image_vertical),
- mTrackHighlightHorizontalImage(p.track_highlight_horizontal_image),
- mTrackHighlightVerticalImage(p.track_highlight_vertical_image),
- mMouseDownSignal(NULL),
- mMouseUpSignal(NULL)
- {
- mViewModel->setValue(p.initial_value);
- updateThumbRect();
- mDragStartThumbRect = mThumbRect;
- setControlName(p.control_name, NULL);
- setValue(getValueF32());
-
- if (p.mouse_down_callback.isProvided())
- {
- setMouseDownCallback(initCommitCallback(p.mouse_down_callback));
- }
- if (p.mouse_up_callback.isProvided())
- {
- setMouseUpCallback(initCommitCallback(p.mouse_up_callback));
- }
- }
- LLSlider::~LLSlider()
- {
- delete mMouseDownSignal;
- delete mMouseUpSignal;
- }
- void LLSlider::setValue(F32 value, BOOL from_event)
- {
- value = llclamp( value, mMinValue, mMaxValue );
- // Round to nearest increment (bias towards rounding down)
- value -= mMinValue;
- value += mIncrement/2.0001f;
- value -= fmod(value, mIncrement);
- value += mMinValue;
- if (!from_event && getValueF32() != value)
- {
- setControlValue(value);
- }
- LLF32UICtrl::setValue(value);
- updateThumbRect();
- }
- void LLSlider::updateThumbRect()
- {
- const S32 DEFAULT_THUMB_SIZE = 16;
- F32 t = (getValueF32() - mMinValue) / (mMaxValue - mMinValue);
- S32 thumb_width = mThumbImage ? mThumbImage->getWidth() : DEFAULT_THUMB_SIZE;
- S32 thumb_height = mThumbImage ? mThumbImage->getHeight() : DEFAULT_THUMB_SIZE;
- if ( mOrientation == HORIZONTAL )
- {
- S32 left_edge = (thumb_width / 2);
- S32 right_edge = getRect().getWidth() - (thumb_width / 2);
- S32 x = left_edge + S32( t * (right_edge - left_edge) );
- mThumbRect.mLeft = x - (thumb_width / 2);
- mThumbRect.mRight = mThumbRect.mLeft + thumb_width;
- mThumbRect.mBottom = getLocalRect().getCenterY() - (thumb_height / 2);
- mThumbRect.mTop = mThumbRect.mBottom + thumb_height;
- }
- else
- {
- S32 top_edge = (thumb_height / 2);
- S32 bottom_edge = getRect().getHeight() - (thumb_height / 2);
- S32 y = top_edge + S32( t * (bottom_edge - top_edge) );
- mThumbRect.mLeft = getLocalRect().getCenterX() - (thumb_width / 2);
- mThumbRect.mRight = mThumbRect.mLeft + thumb_width;
- mThumbRect.mBottom = y - (thumb_height / 2);
- mThumbRect.mTop = mThumbRect.mBottom + thumb_height;
- }
- }
- void LLSlider::setValueAndCommit(F32 value)
- {
- F32 old_value = getValueF32();
- setValue(value);
- if (getValueF32() != old_value)
- {
- onCommit();
- }
- }
- BOOL LLSlider::handleHover(S32 x, S32 y, MASK mask)
- {
- if( hasMouseCapture() )
- {
- if ( mOrientation == HORIZONTAL )
- {
- S32 thumb_half_width = mThumbImage->getWidth()/2;
- S32 left_edge = thumb_half_width;
- S32 right_edge = getRect().getWidth() - (thumb_half_width);
- x += mMouseOffset;
- x = llclamp( x, left_edge, right_edge );
- F32 t = F32(x - left_edge) / (right_edge - left_edge);
- setValueAndCommit(t * (mMaxValue - mMinValue) + mMinValue );
- }
- else // mOrientation == VERTICAL
- {
- S32 thumb_half_height = mThumbImage->getHeight()/2;
- S32 top_edge = thumb_half_height;
- S32 bottom_edge = getRect().getHeight() - (thumb_half_height);
- y += mMouseOffset;
- y = llclamp(y, top_edge, bottom_edge);
- F32 t = F32(y - top_edge) / (bottom_edge - top_edge);
- setValueAndCommit(t * (mMaxValue - mMinValue) + mMinValue );
- }
- getWindow()->setCursor(UI_CURSOR_ARROW);
- lldebugst(LLERR_USER_INPUT) << "hover handled by " << getName() << " (active)" << llendl;
- }
- else
- {
- getWindow()->setCursor(UI_CURSOR_ARROW);
- lldebugst(LLERR_USER_INPUT) << "hover handled by " << getName() << " (inactive)" << llendl;
- }
- return TRUE;
- }
- BOOL LLSlider::handleMouseUp(S32 x, S32 y, MASK mask)
- {
- BOOL handled = FALSE;
- if( hasMouseCapture() )
- {
- gFocusMgr.setMouseCapture( NULL );
- if (mMouseUpSignal)
- (*mMouseUpSignal)( this, getValueF32() );
- handled = TRUE;
- make_ui_sound("UISndClickRelease");
- }
- else
- {
- handled = TRUE;
- }
- return handled;
- }
- BOOL LLSlider::handleMouseDown(S32 x, S32 y, MASK mask)
- {
- // only do sticky-focus on non-chrome widgets
- if (!getIsChrome())
- {
- setFocus(TRUE);
- }
- if (mMouseDownSignal)
- (*mMouseDownSignal)( this, getValueF32() );
- if (MASK_CONTROL & mask) // if CTRL is modifying
- {
- setValueAndCommit(mInitialValue);
- }
- else
- {
- // Find the offset of the actual mouse location from the center of the thumb.
- if (mThumbRect.pointInRect(x,y))
- {
- mMouseOffset = (mOrientation == HORIZONTAL)
- ? (mThumbRect.mLeft + mThumbImage->getWidth()/2) - x
- : (mThumbRect.mBottom + mThumbImage->getHeight()/2) - y;
- }
- else
- {
- mMouseOffset = 0;
- }
- // Start dragging the thumb
- // No handler needed for focus lost since this class has no state that depends on it.
- gFocusMgr.setMouseCapture( this );
- mDragStartThumbRect = mThumbRect;
- }
- make_ui_sound("UISndClick");
- return TRUE;
- }
- BOOL LLSlider::handleKeyHere(KEY key, MASK mask)
- {
- BOOL handled = FALSE;
- switch(key)
- {
- case KEY_DOWN:
- case KEY_LEFT:
- setValueAndCommit(getValueF32() - getIncrement());
- handled = TRUE;
- break;
- case KEY_UP:
- case KEY_RIGHT:
- setValueAndCommit(getValueF32() + getIncrement());
- handled = TRUE;
- break;
- default:
- break;
- }
- return handled;
- }
- BOOL LLSlider::handleScrollWheel(S32 x, S32 y, S32 clicks)
- {
- if ( mOrientation == VERTICAL )
- {
- F32 new_val = getValueF32() - clicks * getIncrement();
- setValueAndCommit(new_val);
- return TRUE;
- }
- return LLF32UICtrl::handleScrollWheel(x,y,clicks);
- }
- void LLSlider::draw()
- {
- F32 alpha = getDrawContext().mAlpha;
- // since thumb image might still be decoding, need thumb to accomodate image size
- updateThumbRect();
- // Draw background and thumb.
- // drawing solids requires texturing be disabled
- gGL.getTexUnit(0)->unbind(LLTexUnit::TT_TEXTURE);
- // Track
- LLPointer<LLUIImage>& trackImage = ( mOrientation == HORIZONTAL )
- ? mTrackImageHorizontal
- : mTrackImageVertical;
- LLPointer<LLUIImage>& trackHighlightImage = ( mOrientation == HORIZONTAL )
- ? mTrackHighlightHorizontalImage
- : mTrackHighlightVerticalImage;
- LLRect track_rect;
- LLRect highlight_rect;
- if ( mOrientation == HORIZONTAL )
- {
- track_rect.set(mThumbImage->getWidth() / 2,
- getLocalRect().getCenterY() + (trackImage->getHeight() / 2),
- getRect().getWidth() - mThumbImage->getWidth() / 2,
- getLocalRect().getCenterY() - (trackImage->getHeight() / 2) );
- highlight_rect.set(track_rect.mLeft, track_rect.mTop, mThumbRect.getCenterX(), track_rect.mBottom);
- }
- else
- {
- track_rect.set(getLocalRect().getCenterX() - (trackImage->getWidth() / 2),
- getRect().getHeight(),
- getLocalRect().getCenterX() + (trackImage->getWidth() / 2),
- 0);
- highlight_rect.set(track_rect.mLeft, track_rect.mTop, track_rect.mRight, track_rect.mBottom);
- }
- trackImage->draw(track_rect, LLColor4::white % alpha);
- trackHighlightImage->draw(highlight_rect, LLColor4::white % alpha);
- // Thumb
- if (hasFocus())
- {
- // Draw focus highlighting.
- mThumbImage->drawBorder(mThumbRect, gFocusMgr.getFocusColor() % alpha, gFocusMgr.getFocusFlashWidth());
- }
- if( hasMouseCapture() ) // currently clicking on slider
- {
- // Show ghost where thumb was before dragging began.
- if (mThumbImage.notNull())
- {
- mThumbImage->draw(mDragStartThumbRect, mThumbCenterColor.get() % (0.3f * alpha));
- }
- if (mThumbImagePressed.notNull())
- {
- mThumbImagePressed->draw(mThumbRect, mThumbOutlineColor % alpha);
- }
- }
- else if (!isInEnabledChain())
- {
- if (mThumbImageDisabled.notNull())
- {
- mThumbImageDisabled->draw(mThumbRect, mThumbCenterColor % alpha);
- }
- }
- else
- {
- if (mThumbImage.notNull())
- {
- mThumbImage->draw(mThumbRect, mThumbCenterColor % alpha);
- }
- }
-
- LLUICtrl::draw();
- }
- boost::signals2::connection LLSlider::setMouseDownCallback( const commit_signal_t::slot_type& cb )
- {
- if (!mMouseDownSignal) mMouseDownSignal = new commit_signal_t();
- return mMouseDownSignal->connect(cb);
- }
- boost::signals2::connection LLSlider::setMouseUpCallback( const commit_signal_t::slot_type& cb )
- {
- if (!mMouseUpSignal) mMouseUpSignal = new commit_signal_t();
- return mMouseUpSignal->connect(cb);
- }