/** * @file llslider.cpp * @brief LLSlider base class * * $LicenseInfo:firstyear=2002&license=viewerlgpl$ * 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 "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")), 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") {} LLSlider::LLSlider(const LLSlider::Params& p) : LLF32UICtrl(p), mMouseOffset( 0 ), mOrientation ((p.orientation() == "horizontal") ? HORIZONTAL : VERTICAL), 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); LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (active)" << LL_ENDL; } else { getWindow()->setCursor(UI_CURSOR_ARROW); LL_DEBUGS("UserInput") << "hover handled by " << getName() << " (inactive)" << LL_ENDL; } 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); } LLColor4 color = isInEnabledChain() ? LLColor4::white % alpha : LLColor4::white % (0.6f * alpha); trackImage->draw(track_rect, color); trackHighlightImage->draw(highlight_rect, color); // 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); }