C++ redraw函数代码示例

/**
 * mouse wheel event. zooms in/out or scrolls when
 * shift or ctrl is pressed.
 */
void QG_GraphicView::wheelEvent(QWheelEvent *e) {
    //RS_DEBUG->print("wheel: %d", e->delta());

    //printf("state: %d\n", e->state());
    //printf("ctrl: %d\n", Qt::ControlButton);

    if (container==NULL) {
        return;
    }

    RS_Vector mouse = toGraph(RS_Vector(e->x(), e->y()));

#if QT_VERSION >= 0x050200
    QPoint numPixels = e->pixelDelta();

    // high-resolution scrolling triggers Pan instead of Zoom logic
    isSmoothScrolling |= !numPixels.isNull();

    if (isSmoothScrolling) {
        if (e->phase() == Qt::ScrollEnd) isSmoothScrolling = false;

        if (!numPixels.isNull()) {
            if (e->modifiers()==Qt::ControlModifier) {
                // Hold ctrl to zoom. 1 % per pixel
                double v = -numPixels.y() / 100.;
                RS2::ZoomDirection direction;
                double factor;

                if (v < 0) {
                    direction = RS2::Out; factor = 1-v;
                } else {
                    direction = RS2::In;  factor = 1+v;
                }

                setCurrentAction(new RS_ActionZoomIn(*container, *this, direction,
                                                     RS2::Both, mouse, factor));
            } else {
                // otherwise, scroll
				//scroll by scrollbars: issue #479
				hScrollBar->setValue(hScrollBar->value() - numPixels.x());
				vScrollBar->setValue(vScrollBar->value() - numPixels.y());

//                setCurrentAction(new RS_ActionZoomScroll(numPixels.x(), numPixels.y(),
//                                                         *container, *this));
            }
            redraw();
        }
        e->accept();
        return;
    }
#endif

    if (e->delta() == 0) {
        // A zero delta event occurs when smooth scrolling is ended. Ignore this
        e->accept();
        return;
    }

    bool scroll = false;
    RS2::Direction direction = RS2::Up;

    // scroll up / down:
    if (e->modifiers()==Qt::ControlModifier) {
        scroll = true;
        switch(e->orientation()){
        case Qt::Horizontal:
            direction=(e->delta()>0)?RS2::Left:RS2::Right;
            break;
        default:
        case Qt::Vertical:
            direction=(e->delta()>0)?RS2::Up:RS2::Down;
        }
    }

    // scroll left / right:
    else if	(e->modifiers()==Qt::ShiftModifier) {
        scroll = true;
        switch(e->orientation()){
        case Qt::Horizontal:
            direction=(e->delta()>0)?RS2::Up:RS2::Down;
            break;
        default:
        case Qt::Vertical:
            direction=(e->delta()>0)?RS2::Left:RS2::Right;
        }
    }

    if (scroll) {
		//scroll by scrollbars: issue #479
		switch(direction){
		case RS2::Left:
		case RS2::Right:
			hScrollBar->setValue(hScrollBar->value()+e->delta());
			break;
		default:
			vScrollBar->setValue(vScrollBar->value()+e->delta());
//.........这里部分代码省略.........

/**
 * Show is called automatically when the window is created.
 */
void WindowMainMenu::show() {
	redraw();
}

int EnvelopeFreeEdit::handle(int event)
{
    const int x_=Fl::event_x()-x();
    const int y_=Fl::event_y()-y();
    static Fl_Widget *old_focus;
    int key;

    switch(event) {
      case FL_ENTER:
          old_focus=Fl::focus();
          Fl::focus(this);
          // Otherwise the underlying window seems to regrab focus,
          // and I can't see the KEYDOWN action.
          return 1;
      case FL_LEAVE:
          Fl::focus(old_focus);
          break;
      case FL_KEYDOWN:
      case FL_KEYUP:
          key = Fl::event_key();
          if (key==FL_Control_L || key==FL_Control_R){
              ctrldown = (event==FL_KEYDOWN);
              redraw();
              if (pair!=NULL) pair->redraw();
          }
          break;
      case FL_PUSH:
            currentpoint=getnearest(x_,y_);
            cpx=x_;
            cpdt=Penvdt[currentpoint];
            lastpoint=currentpoint;
            redraw();
            if (pair)
                pair->redraw();
            return 1;
      case FL_RELEASE:
            currentpoint=-1;
            redraw();
            if (pair)
                pair->redraw();
            return 1;
      case FL_MOUSEWHEEL:
          if (lastpoint>=0) {
              if (!ctrldown) {
                  int ny = Penvval[lastpoint] - Fl::event_dy();
                  ny = ny < 0 ? 0 : ny > 127 ? 127 : ny;
                  Penvval[lastpoint] = ny;
                  oscWrite(to_s("Penvval")+to_s(lastpoint), "c", ny);
                  oscWrite("Penvval","");
              } else if (lastpoint > 0) {
                  int newdt = Fl::event_dy() + Penvdt[lastpoint];
                  newdt = newdt < 0 ? 0 : newdt > 127 ? 127 : newdt;
                  Penvdt[lastpoint] = newdt;
                  oscWrite(to_s("Penvdt")+to_s(lastpoint),  "c", newdt);
                  oscWrite("Penvdt","");
              }
              redraw();
              if (pair!=NULL) pair->redraw();
              return 1;
          }
      case FL_DRAG:
          if (currentpoint>=0){
              int ny=limit(127-(int) (y_*127.0/h()), 0, 127);

              Penvval[currentpoint]=ny;

              const int dx=(int)((x_-cpx)*0.1);
              const int newdt=limit(cpdt+dx,0,127);

              if(currentpoint!=0)
                  Penvdt[currentpoint]=newdt;
              else
                  Penvdt[currentpoint]=0;

              oscWrite(to_s("Penvval")+to_s(currentpoint), "c", ny);
              oscWrite(to_s("Penvdt")+to_s(currentpoint),  "c", newdt);
              oscWrite("Penvdt","");
              oscWrite("Penvval","");
              redraw();

              if(pair)
                  pair->redraw();
              return 1;
          }
    }
      // Needed to propagate undo/redo keys.
    return 0;
}

void redraw(bool forceredraw){
	redraw(Inter::drawScreen,false,forceredraw);
}

void CQuestLog::sliderMoved (int newpos)
{
	recreateQuestList (newpos); //move components
	redraw();
}

//.........这里部分代码省略.........
			    		select_row, select_col);
			    ret = 1;
			}
		    }
		    break;

		default:
		    ret = 0;		// express disinterest
		    break;
	    }
	    _last_row = R;
	    break;

        case FL_DRAG:
            if (_auto_drag == 1) {
		ret = 1;
		break;
	    }

	    if ( _resizing_col > -1 )
	    {
		// Dragging column?
		//
		//    Let user drag even /outside/ the row/col widget.
		//    Don't allow column width smaller than 1.
		//    Continue to show FL_CURSOR_WE at all times during drag.
		//
		int offset = _dragging_x - Fl::event_x();
		int new_w = col_width(_resizing_col) - offset;
		if ( new_w < _col_resize_min ) new_w = _col_resize_min;
		col_width(_resizing_col, new_w);
		_dragging_x = Fl::event_x();
		table_resized();
		redraw();
		change_cursor(FL_CURSOR_WE);
		ret = 1;
		if ( Fl_Widget::callback() && when() & FL_WHEN_CHANGED )
		    { do_callback(CONTEXT_RC_RESIZE, R, C); }
	    }
	    else if ( _resizing_row > -1 )
	    {
		// Dragging row?
		//
		//    Let user drag even /outside/ the row/col widget.
		//    Don't allow row width smaller than 1.
		//    Continue to show FL_CURSOR_NS at all times during drag.
		//
		int offset = _dragging_y - Fl::event_y();
		int new_h = row_height(_resizing_row) - offset;
		if ( new_h < _row_resize_min ) new_h = _row_resize_min;
		row_height(_resizing_row, new_h);
		_dragging_y = Fl::event_y();
		table_resized();
		redraw();
		change_cursor(FL_CURSOR_NS);
		ret = 1;
		if ( Fl_Widget::callback() && when() & FL_WHEN_CHANGED )
		    { do_callback(CONTEXT_RC_RESIZE, R, C); }
	    } else {
                if (Fl::event_button() == 1 && _selecting == CONTEXT_CELL 
			&& context == CONTEXT_CELL) 
		{
                    if (select_row != R || select_col != C)
                        damage_zone(current_row, current_col, select_row, select_col, R, C);
                    select_row = R;
                    select_col = C;

/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * Empty the shapes vector, then redraw
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~*/
void Scene::clear(){
    shapes.clear();
    redraw();
}

void Edit::sttitle(String val)
  {
  title=val;
  redraw();
  }

//.........这里部分代码省略.........
    xml.setTo("AudioUnits");
    if (xml.exists("AudioUnit[0]")) {
        xml.setTo("AudioUnit[0]");
        do {
            string synthName = xml.getValue<string>("Name");
            synths[synthName]->getSynth().loadCustomPreset(ofToDataPath("presets/"+xml.getValue<string>("Preset")));
        }
        while(xml.setToSibling());
        xml.setToParent();
    }
    xml.setToParent();
    
    xml.setTo("Manta");
    
    setKey(xml.getValue<int>("Key"));
    setMode(xml.getValue<int>("Mode"));
    setOctave(xml.getValue<int>("Octave"));
    setPadFreezingEnabled(xml.getValue<int>("FreezeEnabled") == 1 ? true : false);

    xml.setTo("Pads");
    if (xml.exists("PadMapping[0]")) {
        xml.setTo("PadMapping[0]");
        do {
            int id = xml.getValue<int>("Id");
            string synthName = xml.getValue<string>("SynthName");
            string parameterName = xml.getValue<string>("ParameterName");
            bool toggle = xml.getValue<int>("Toggle") == 1 ? true : false;
            mapPadToParameter(floor(id / 8), id % 8, *synths[synthName], parameterName, toggle);
            padMap[id]->min = xml.getValue<float>("Min");
            padMap[id]->max = xml.getValue<float>("Max");
        }
        while(xml.setToSibling());
        xml.setToParent();
    }
    xml.setToParent();
    
    xml.setTo("Sliders");
    if (xml.exists("SliderMapping[0]")) {
        xml.setTo("SliderMapping[0]");
        do {
            int id = xml.getValue<int>("Id");
            string synthName = xml.getValue<string>("SynthName");
            string parameterName = xml.getValue<string>("ParameterName");
            mapSliderToParameter(id, *synths[synthName], parameterName);
            sliderMap[id]->min = xml.getValue<float>("Min");
            sliderMap[id]->max = xml.getValue<float>("Max");
        }
        while(xml.setToSibling());
        xml.setToParent();
    }
    xml.setToParent();

    xml.setTo("Buttons");
    if (xml.exists("ButtonMapping[0]")) {
        xml.setTo("ButtonMapping[0]");
        do {
            int id = xml.getValue<int>("Id");
            string synthName = xml.getValue<string>("SynthName");
            string parameterName = xml.getValue<string>("ParameterName");
            bool toggle = xml.getValue<int>("Toggle") == 1 ? true : false;
            mapButtonToParameter(id, *synths[synthName], parameterName, toggle);
            buttonMap[id]->min = xml.getValue<float>("Min");
            buttonMap[id]->max = xml.getValue<float>("Max");
        }
        while(xml.setToSibling());
        xml.setToParent();
    }
    xml.setToParent();

    xml.setTo("Stats");
    if (xml.exists("StatMapping[0]")) {
        xml.setTo("StatMapping[0]");
        do {
            int id = xml.getValue<int>("Id");
            string synthName = xml.getValue<string>("SynthName");
            string parameterName = xml.getValue<string>("ParameterName");
            mapStatToParameter(id, *synths[synthName], parameterName);
            statMap[id]->min = xml.getValue<float>("Min");
            statMap[id]->max = xml.getValue<float>("Max");
        }
        while(xml.setToSibling());
        xml.setToParent();
    }
    xml.setToParent();

    xml.setTo("MidiMap");
    if (xml.exists("MidiMapping[0]")) {
        clearMidiMapping();
        xml.setTo("MidiMapping[0]");
        do {
            setMidiMapping(xml.getValue<int>("Id"), synths[xml.getValue<string>("SynthName")]);
        }
        while(xml.setToSibling());
        xml.setToParent();
    }
    
    xml.setToParent();
    
    redraw();
}

void Flu_Toggle_Group :: toggleCB()
{
  do_callback();
  redraw();
}

int main(int argc, char * argv[]) {

	if (argc < 2) {
		fprintf(stderr, "Usage: %s image_file\n", argv[0]);
		return 1;
	}

	file_name = argv[1];

	load_sprite_png(&image, argv[1]);

	yctx = yutani_init();

	init_decorations();

	win = yutani_window_create(yctx, image.width + decor_width(), image.height + decor_height());
	yutani_window_move(yctx, win, center_x(image.width + decor_width()), center_y(image.height + decor_height()));
	ctx = init_graphics_yutani_double_buffer(win);

	int stride;

	stride = cairo_format_stride_for_width(CAIRO_FORMAT_ARGB32, win->width);
	surface_win = cairo_image_surface_create_for_data(ctx->backbuffer, CAIRO_FORMAT_ARGB32, win->width, win->height, stride);
	cr_win = cairo_create(surface_win);

	yutani_window_advertise_icon(yctx, win, "Image Viewer", "image-viewer");

	redraw();

	yutani_focus_window(yctx, win->wid);

	while (!should_exit) {
		yutani_msg_t * m = yutani_poll(yctx);

		if (m) {
			switch (m->type) {
				case YUTANI_MSG_KEY_EVENT:
					{
						struct yutani_msg_key_event * ke = (void*)m->data;
						if (ke->event.key == 'q' && ke->event.action == KEY_ACTION_DOWN) {
							should_exit = 1;
						}
					}
					break;
				case YUTANI_MSG_WINDOW_FOCUS_CHANGE:
					{
						struct yutani_msg_window_focus_change * wf = (void*)m->data;
						if (wf->wid == win->wid) {
							win->focused = wf->focused;
							redraw();
						}
					}
					break;
				case YUTANI_MSG_WINDOW_MOUSE_EVENT:
					{
						struct yutani_msg_window_mouse_event * me = (void*)m->data;
						if (me->wid != win->wid) break;
						int result = decor_handle_event(yctx, m);
						switch (result) {
							case DECOR_CLOSE:
								should_exit = 1;
								break;
							default:
								/* Other actions */
								break;
						}
					}
					break;
				case YUTANI_MSG_SESSION_END:
					should_exit = 1;
					break;
				default:
					break;
			}
			free(m);
		}
	}

	return 0;
}

BOOL CALLBACK ColumnEditorDlg::run_dlgProc(UINT message, WPARAM wParam, LPARAM)
{
	switch (message) 
	{
		case WM_INITDIALOG :
		{
			switchTo(activeText);
			::SendDlgItemMessage(_hSelf, IDC_COL_DEC_RADIO, BM_SETCHECK, TRUE, 0);
			goToCenter();

			NppParameters *pNppParam = NppParameters::getInstance();
			ETDTProc enableDlgTheme = (ETDTProc)pNppParam->getEnableThemeDlgTexture();
			if (enableDlgTheme)
			{
				enableDlgTheme(_hSelf, ETDT_ENABLETAB);
				redraw();
			}
			return TRUE;
		}
		case WM_COMMAND : 
		{
			switch (wParam)
			{
				case IDCANCEL : // Close
					display(false);
					return TRUE;

				case IDOK :
                {
					(*_ppEditView)->execute(SCI_BEGINUNDOACTION);
					
					const int stringSize = 1024;
					TCHAR str[stringSize];
					
					bool isTextMode = (BST_CHECKED == ::SendDlgItemMessage(_hSelf, IDC_COL_TEXT_RADIO, BM_GETCHECK, 0, 0));
					
					if (isTextMode)
					{
						::SendDlgItemMessage(_hSelf, IDC_COL_TEXT_EDIT, WM_GETTEXT, stringSize, (LPARAM)str);

						display(false);
						
						if ((*_ppEditView)->execute(SCI_SELECTIONISRECTANGLE) || (*_ppEditView)->execute(SCI_GETSELECTIONS) > 1)
						{
							ColumnModeInfos colInfos = (*_ppEditView)->getColumnModeSelectInfo();
							std::sort(colInfos.begin(), colInfos.end(), SortInPositionOrder());
							(*_ppEditView)->columnReplace(colInfos, str);
							std::sort(colInfos.begin(), colInfos.end(), SortInSelectOrder());
							(*_ppEditView)->setMultiSelections(colInfos);
						}
						else
						{
							int cursorPos = (*_ppEditView)->execute(SCI_GETCURRENTPOS);
							int cursorCol = (*_ppEditView)->execute(SCI_GETCOLUMN, cursorPos);
							int cursorLine = (*_ppEditView)->execute(SCI_LINEFROMPOSITION, cursorPos);
							int endPos = (*_ppEditView)->execute(SCI_GETLENGTH);
							int endLine = (*_ppEditView)->execute(SCI_LINEFROMPOSITION, endPos);

							int lineAllocatedLen = 1024;
							TCHAR *line = new TCHAR[lineAllocatedLen];

							for (int i = cursorLine ; i <= endLine ; i++)
							{
								int lineBegin = (*_ppEditView)->execute(SCI_POSITIONFROMLINE, i);
								int lineEnd = (*_ppEditView)->execute(SCI_GETLINEENDPOSITION, i);

								int lineEndCol = (*_ppEditView)->execute(SCI_GETCOLUMN, lineEnd);
								int lineLen = lineEnd - lineBegin + 1;

								if (lineLen > lineAllocatedLen)
								{
									delete [] line;
									line = new TCHAR[lineLen];
								}
								(*_ppEditView)->getGenericText(line, lineLen, lineBegin, lineEnd);
								generic_string s2r(line);

								if (lineEndCol < cursorCol)
								{
									generic_string s_space(cursorCol - lineEndCol, ' ');
									s2r.append(s_space);
									s2r.append(str);
								}
								else
								{
									int posAbs2Start = (*_ppEditView)->execute(SCI_FINDCOLUMN, i, cursorCol);
									int posRelative2Start = posAbs2Start - lineBegin;
									s2r.insert(posRelative2Start, str);
								}
								(*_ppEditView)->replaceTarget(s2r.c_str(), lineBegin, lineEnd);
							}
							delete [] line;
						}
					}
					else
					{
						int initialNumber = ::GetDlgItemInt(_hSelf, IDC_COL_INITNUM_EDIT, NULL, TRUE);
						int increaseNumber = ::GetDlgItemInt(_hSelf, IDC_COL_INCREASENUM_EDIT, NULL, TRUE);
						UCHAR format = getFormat();
						display(false);
//.........这里部分代码省略.........

    void MWList::redraw(bool scrollbarShown)
    {
        const int _scrollBarWidth = 20; // fetch this from skin?
        const int scrollBarWidth = scrollbarShown ? _scrollBarWidth : 0;
        const int spacing = 3;
        int viewPosition = -mScrollView->getViewOffset().top;

        while (mScrollView->getChildCount())
        {
            MyGUI::Gui::getInstance().destroyWidget(mScrollView->getChildAt(0));
        }

        mItemHeight = 0;
        int i=0;
        for (std::vector<std::string>::const_iterator it=mItems.begin();
            it!=mItems.end(); ++it)
        {
            if (*it != "")
            {
                if (mListItemSkin.empty())
                    return;
                MyGUI::Button* button = mScrollView->createWidget<MyGUI::Button>(
                    mListItemSkin, MyGUI::IntCoord(0, mItemHeight, mScrollView->getSize().width - scrollBarWidth - 2, 24),
                    MyGUI::Align::Left | MyGUI::Align::Top, getName() + "_item_" + (*it));
                button->setCaption((*it));
                button->getSubWidgetText()->setWordWrap(true);
                button->getSubWidgetText()->setTextAlign(MyGUI::Align::Left);
                button->eventMouseWheel += MyGUI::newDelegate(this, &MWList::onMouseWheel);
                button->eventMouseButtonClick += MyGUI::newDelegate(this, &MWList::onItemSelected);

                int height = button->getTextSize().height;
                button->setSize(MyGUI::IntSize(button->getSize().width, height));
                button->setUserData(i);

                mItemHeight += height + spacing;
            }
            else
            {
                MyGUI::ImageBox* separator = mScrollView->createWidget<MyGUI::ImageBox>("MW_HLine",
                    MyGUI::IntCoord(2, mItemHeight, mScrollView->getWidth() - scrollBarWidth - 4, 18),
                    MyGUI::Align::Left | MyGUI::Align::Top | MyGUI::Align::HStretch);
                separator->setNeedMouseFocus(false);

                mItemHeight += 18 + spacing;
            }
            ++i;
        }

        // Canvas size must be expressed with VScroll disabled, otherwise MyGUI would expand the scroll area when the scrollbar is hidden
        mScrollView->setVisibleVScroll(false);
        mScrollView->setCanvasSize(mClient->getSize().width, std::max(mItemHeight, mClient->getSize().height));
        mScrollView->setVisibleVScroll(true);

        if (!scrollbarShown && mItemHeight > mClient->getSize().height)
            redraw(true);

        int viewRange = mScrollView->getCanvasSize().height;
        if(viewPosition > viewRange)
            viewPosition = viewRange;
        mScrollView->setViewOffset(MyGUI::IntPoint(0, -viewPosition));
    }

 void MWList::adjustSize()
 {
     redraw();
 }

/**
 * performs autozoom
 *
 * @param axis include axis in zoom
 * @param keepAspectRatio true: keep aspect ratio 1:1
 *                        false: factors in x and y are stretched to the max
 */
void RS_GraphicView::zoomAuto(bool axis, bool keepAspectRatio) {

    RS_DEBUG->print("RS_GraphicView::zoomAuto");


    if (container!=NULL) {
        container->calculateBorders();

        double sx, sy;
        if (axis) {
            sx = std::max(container->getMax().x, 0.0)
                    - std::min(container->getMin().x, 0.0);
            sy = std::max(container->getMax().y, 0.0)
                    - std::min(container->getMin().y, 0.0);
        } else {
            sx = container->getSize().x;
            sy = container->getSize().y;
        }
        //    std::cout<<" RS_GraphicView::zoomAuto("<<axis<<","<<keepAspectRatio<<")"<<std::endl;

        double fx=1., fy=1.;
        unsigned short fFlags=0;

        if (sx>RS_TOLERANCE) {
            fx = (getWidth()-borderLeft-borderRight) / sx;
        } else {
            fFlags += 1; //invalid x factor
        }

        if (sy>RS_TOLERANCE) {
            fy = (getHeight()-borderTop-borderBottom) / sy;
        } else {
            fFlags += 2; //invalid y factor
        }
        //    std::cout<<"0: fx= "<<fx<<"\tfy="<<fy<<std::endl;

        RS_DEBUG->print("f: %f/%f", fx, fy);

        switch(fFlags){
        case 1:
            fx=fy;
            break;
        case 2:
            fy=fx;
            break;
        case 3:
            return; //do not do anything, invalid factors
        default:
            if (keepAspectRatio) {
                fx = fy = std::min(fx, fy);
            }
            //                break;
        }
        //    std::cout<<"1: fx= "<<fx<<"\tfy="<<fy<<std::endl;

        RS_DEBUG->print("f: %f/%f", fx, fy);
        //exclude invalid factors
        fFlags=0;
        if (fx<RS_TOLERANCE||fx>RS_MAXDOUBLE) {
            fx=1.0;
            fFlags += 1;
        }
        if (fy<RS_TOLERANCE||fy>RS_MAXDOUBLE) {
            fy=1.0;
            fFlags += 2;
        }
        if(fFlags == 3 ) return;
        saveView();
        //        std::cout<<"2: fx= "<<fx<<"\tfy="<<fy<<std::endl;
        setFactorX(fx);
        setFactorY(fy);

        RS_DEBUG->print("f: %f/%f", fx, fy);


//        RS_DEBUG->print("adjustOffsetControls");
        adjustOffsetControls();
//        RS_DEBUG->print("adjustZoomControls");
        adjustZoomControls();
//        RS_DEBUG->print("centerOffsetX");
        centerOffsetX();
//        RS_DEBUG->print("centerOffsetY");
        centerOffsetY();
//        RS_DEBUG->print("updateGrid");
        //    updateGrid();

        redraw();
    }
    RS_DEBUG->print("RS_GraphicView::zoomAuto OK");
}