1*b1cdbd2cSJim Jagielski/************************************************************** 2*b1cdbd2cSJim Jagielski * 3*b1cdbd2cSJim Jagielski * Licensed to the Apache Software Foundation (ASF) under one 4*b1cdbd2cSJim Jagielski * or more contributor license agreements. See the NOTICE file 5*b1cdbd2cSJim Jagielski * distributed with this work for additional information 6*b1cdbd2cSJim Jagielski * regarding copyright ownership. The ASF licenses this file 7*b1cdbd2cSJim Jagielski * to you under the Apache License, Version 2.0 (the 8*b1cdbd2cSJim Jagielski * "License"); you may not use this file except in compliance 9*b1cdbd2cSJim Jagielski * with the License. You may obtain a copy of the License at 10*b1cdbd2cSJim Jagielski * 11*b1cdbd2cSJim Jagielski * http://www.apache.org/licenses/LICENSE-2.0 12*b1cdbd2cSJim Jagielski * 13*b1cdbd2cSJim Jagielski * Unless required by applicable law or agreed to in writing, 14*b1cdbd2cSJim Jagielski * software distributed under the License is distributed on an 15*b1cdbd2cSJim Jagielski * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16*b1cdbd2cSJim Jagielski * KIND, either express or implied. See the License for the 17*b1cdbd2cSJim Jagielski * specific language governing permissions and limitations 18*b1cdbd2cSJim Jagielski * under the License. 19*b1cdbd2cSJim Jagielski * 20*b1cdbd2cSJim Jagielski *************************************************************/ 21*b1cdbd2cSJim Jagielski 22*b1cdbd2cSJim Jagielski 23*b1cdbd2cSJim Jagielski#ifndef __com_sun_star_rendering_XBufferController_idl__ 24*b1cdbd2cSJim Jagielski#define __com_sun_star_rendering_XBufferController_idl__ 25*b1cdbd2cSJim Jagielski 26*b1cdbd2cSJim Jagielski#ifndef __com_sun_star_uno_XInterface_idl__ 27*b1cdbd2cSJim Jagielski#include <com/sun/star/uno/XInterface.idl> 28*b1cdbd2cSJim Jagielski#endif 29*b1cdbd2cSJim Jagielski#ifndef __com_sun_star_lang_IllegalArgumentException_idl__ 30*b1cdbd2cSJim Jagielski#include <com/sun/star/lang/IllegalArgumentException.idl> 31*b1cdbd2cSJim Jagielski#endif 32*b1cdbd2cSJim Jagielski 33*b1cdbd2cSJim Jagielskimodule com { module sun { module star { module rendering { 34*b1cdbd2cSJim Jagielski 35*b1cdbd2cSJim Jagielski/** Interface providing access to double/multi-buffer facilities of 36*b1cdbd2cSJim Jagielski screen devices.<p> 37*b1cdbd2cSJim Jagielski 38*b1cdbd2cSJim Jagielski This interface provides methods to enable and control 39*b1cdbd2cSJim Jagielski double/multi-buffering facilities on screen devices.<p> 40*b1cdbd2cSJim Jagielski 41*b1cdbd2cSJim Jagielski @since OpenOffice 2.0 42*b1cdbd2cSJim Jagielski */ 43*b1cdbd2cSJim Jagielskipublished interface XBufferController : ::com::sun::star::uno::XInterface 44*b1cdbd2cSJim Jagielski{ 45*b1cdbd2cSJim Jagielski /** Create the given number of background buffers.<p> 46*b1cdbd2cSJim Jagielski 47*b1cdbd2cSJim Jagielski There's one buffer implicitely available, which is the canvas 48*b1cdbd2cSJim Jagielski surface itself. Thus, calling <code>createBuffers(1)</code> 49*b1cdbd2cSJim Jagielski creates a double-buffered object.<p> 50*b1cdbd2cSJim Jagielski 51*b1cdbd2cSJim Jagielski @param nBuffers 52*b1cdbd2cSJim Jagielski The number of background<buffers requested. Must be greater 53*b1cdbd2cSJim Jagielski than 0. 54*b1cdbd2cSJim Jagielski 55*b1cdbd2cSJim Jagielski @return the number of actually generated buffers, which might 56*b1cdbd2cSJim Jagielski be between 0 (no double-buffering available) and nBuffers. 57*b1cdbd2cSJim Jagielski 58*b1cdbd2cSJim Jagielski @throws <type>com::sun::star::lang::IllegalArgumentException</type> 59*b1cdbd2cSJim Jagielski if nBuffers is smaller than one. 60*b1cdbd2cSJim Jagielski */ 61*b1cdbd2cSJim Jagielski long createBuffers( [in] long nBuffers ) 62*b1cdbd2cSJim Jagielski raises (com::sun::star::lang::IllegalArgumentException); 63*b1cdbd2cSJim Jagielski 64*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------- 65*b1cdbd2cSJim Jagielski 66*b1cdbd2cSJim Jagielski /** Destroy all buffers generated via this object. 67*b1cdbd2cSJim Jagielski */ 68*b1cdbd2cSJim Jagielski void destroyBuffers(); 69*b1cdbd2cSJim Jagielski 70*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------- 71*b1cdbd2cSJim Jagielski 72*b1cdbd2cSJim Jagielski /** Switch the display to show the specified buffer.<p> 73*b1cdbd2cSJim Jagielski 74*b1cdbd2cSJim Jagielski The method returns, when the switch is performed and the 75*b1cdbd2cSJim Jagielski selected buffer is shown on screen, or immediately when an 76*b1cdbd2cSJim Jagielski error occurs. If the switch was successful, subsequent render 77*b1cdbd2cSJim Jagielski operations will be directed to the new backbuffer.<p> 78*b1cdbd2cSJim Jagielski 79*b1cdbd2cSJim Jagielski Use this method if you need your screen display to be in sync 80*b1cdbd2cSJim Jagielski with other things, e.g. sound playback.<p> 81*b1cdbd2cSJim Jagielski 82*b1cdbd2cSJim Jagielski @param bUpdateAll 83*b1cdbd2cSJim Jagielski When <TRUE/>, update the whole screen. When <FALSE/>, 84*b1cdbd2cSJim Jagielski implementation is permitted to restrict update to areas the 85*b1cdbd2cSJim Jagielski canvas itself changed (e.g. because of render operations, or 86*b1cdbd2cSJim Jagielski changes on the sprites). The former is useful for updates 87*b1cdbd2cSJim Jagielski after window expose events, the latter for animation display. 88*b1cdbd2cSJim Jagielski 89*b1cdbd2cSJim Jagielski @return whether the switch was performed successfully. 90*b1cdbd2cSJim Jagielski 91*b1cdbd2cSJim Jagielski @throws <type>com::sun::star::lang::IllegalArgumentException</type> 92*b1cdbd2cSJim Jagielski if nBuffer is outside the permissible range. 93*b1cdbd2cSJim Jagielski */ 94*b1cdbd2cSJim Jagielski boolean showBuffer( [in] boolean bUpdateAll ); 95*b1cdbd2cSJim Jagielski 96*b1cdbd2cSJim Jagielski //------------------------------------------------------------------------- 97*b1cdbd2cSJim Jagielski 98*b1cdbd2cSJim Jagielski /** Schedule the display of the specified buffer.<p> 99*b1cdbd2cSJim Jagielski 100*b1cdbd2cSJim Jagielski The method returns, when the switching of the buffer is 101*b1cdbd2cSJim Jagielski successfully scheduled, or immediately when an error 102*b1cdbd2cSJim Jagielski occurs. If the switch was successful, subsequent render 103*b1cdbd2cSJim Jagielski operations will be directed to the new backbuffer. Note that, 104*b1cdbd2cSJim Jagielski if the buffer switching is exceedingly slow, or the frequency 105*b1cdbd2cSJim Jagielski of switchBuffer() is exceedingly high, the buffer scheduled 106*b1cdbd2cSJim Jagielski for display here might become the current render target 107*b1cdbd2cSJim Jagielski <em>before</em> it is fully displayed on screen. In this case, 108*b1cdbd2cSJim Jagielski any rendering operation to this buffer will block, until it is 109*b1cdbd2cSJim Jagielski safe to perform the operation without visible cluttering.<p> 110*b1cdbd2cSJim Jagielski 111*b1cdbd2cSJim Jagielski Use this method if you favor maximal render speed, but don't 112*b1cdbd2cSJim Jagielski necessarily require your screen display to be in sync with 113*b1cdbd2cSJim Jagielski other things, e.g. sound playback.<p> 114*b1cdbd2cSJim Jagielski 115*b1cdbd2cSJim Jagielski @param bUpdateAll 116*b1cdbd2cSJim Jagielski When <TRUE/>, update the whole screen. When <FALSE/>, 117*b1cdbd2cSJim Jagielski implementation is permitted to restrict update to areas the 118*b1cdbd2cSJim Jagielski canvas itself changed (e.g. because of render operations, or 119*b1cdbd2cSJim Jagielski changes on the sprites). The former is useful for updates 120*b1cdbd2cSJim Jagielski after window expose events, the latter for animation display. 121*b1cdbd2cSJim Jagielski 122*b1cdbd2cSJim Jagielski @return whether the switch was performed successfully. 123*b1cdbd2cSJim Jagielski */ 124*b1cdbd2cSJim Jagielski boolean switchBuffer( [in] boolean bUpdateAll ); 125*b1cdbd2cSJim Jagielski 126*b1cdbd2cSJim Jagielski}; 127*b1cdbd2cSJim Jagielski 128*b1cdbd2cSJim Jagielski}; }; }; }; 129*b1cdbd2cSJim Jagielski 130*b1cdbd2cSJim Jagielski#endif 131