MythTV: Actions.cpp Source File

00001 /* Actions.cpp
00002 
00003    Copyright (C)  David C. J. Matthews 2004, 2008  dm at prolingua.co.uk
00004 
00005    This program is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU General Public License
00007    as published by the Free Software Foundation; either version 2
00008    of the License, or (at your option) any later version.
00009 
00010    This program is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00013    GNU General Public License for more details.
00014 
00015    You should have received a copy of the GNU General Public License
00016    along with this program; if not, write to the Free Software
00017    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
00018    Or, point your browser to http://www.gnu.org/copyleft/gpl.html
00019 
00020 */
00021 
00022 #include <stdio.h>
00023 
00024 #include "BaseActions.h"
00025 #include "Actions.h"
00026 #include "BaseClasses.h"
00027 #include "ParseNode.h"
00028 #include "ASN1Codes.h"
00029 #include "Ingredients.h"
00030 #include "Engine.h"
00031 #include "Variables.h"
00032 #include "Programs.h"
00033 #include "Bitmap.h"
00034 #include "Visible.h"
00035 #include "Text.h"
00036 #include "DynamicLineArt.h"
00037 #include "Link.h"
00038 #include "TokenGroup.h"
00039 #include "Stream.h"
00040 #include "Logging.h"
00041 
00042 
00043 // Temporary place-holder for actions we haven't done yet.
00044 class MHUnimplementedAction: public MHElemAction
00045 {
00046 public:
00047     MHUnimplementedAction(int nTag): MHElemAction("") { m_nTag = nTag; }
00048     virtual void Initialise(MHParseNode *, MHEngine *) {}
00049     virtual void PrintMe(FILE *fd, int /*nTabs*/) const { fprintf(fd, "****Missing action %d\n", m_nTag); }
00050     virtual void Perform(MHEngine *) { MHERROR(QString("Unimplemented action %1").arg(m_nTag)); }
00051 protected:
00052     int m_nTag;
00053 };
00054 
00055 // ActionSequence.
00056 
00057 // Process the action set and create the action values.
00058 void MHActionSequence::Initialise(MHParseNode *p, MHEngine *engine)
00059 {
00060     // Depending on the caller we may have a tagged argument list or a sequence.
00061     for (int i = 0; i < p->GetArgCount(); i++) {
00062         MHParseNode *pElemAction = p->GetArgN(i);
00063         MHElemAction *pAction;
00064         switch (pElemAction->GetTagNo()) {
00065         case C_ACTIVATE: pAction = new MHActivate(":Activate", true); break;
00066         case C_ADD: pAction = new MHAdd; break;
00067         case C_ADD_ITEM: pAction = new MHAddItem; break;
00068         case C_APPEND: pAction = new MHAppend; break;
00069         case C_BRING_TO_FRONT: pAction = new MHBringToFront; break;
00070         case C_CALL: pAction = new MHCall(":Call", false); break;
00071         case C_CALL_ACTION_SLOT: pAction = new MHCallActionSlot; break;
00072         case C_CLEAR: pAction = new MHClear; break;
00073         case C_CLONE: pAction = new MHClone; break;
00074         case C_CLOSE_CONNECTION: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ??
00075         case C_DEACTIVATE: pAction = new MHActivate(":Deactivate", false); break;
00076         case C_DEL_ITEM: pAction = new MHDelItem; break;
00077         case C_DESELECT: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // Button
00078         case C_DESELECT_ITEM: pAction = new MHDeselectItem; break;
00079         case C_DIVIDE: pAction = new MHDivide; break;
00080         case C_DRAW_ARC: pAction = new MHDrawArcSector(":DrawArc", false); break;
00081         case C_DRAW_LINE: pAction = new MHDrawLine; break;
00082         case C_DRAW_OVAL: pAction = new MHDrawOval; break;
00083         case C_DRAW_POLYGON: pAction = new MHDrawPoly(":DrawPolygon", true); break;
00084         case C_DRAW_POLYLINE: pAction = new MHDrawPoly(":DrawPolyline", false); break;
00085         case C_DRAW_RECTANGLE: pAction = new MHDrawRectangle; break;
00086         case C_DRAW_SECTOR: pAction = new MHDrawArcSector(":DrawSector", true); break;
00087         case C_FORK: pAction = new MHCall(":Fork", true); break;
00088         case C_GET_AVAILABILITY_STATUS: pAction = new MHGetAvailabilityStatus; break;
00089         case C_GET_BOX_SIZE: pAction = new MHGetBoxSize; break;
00090         case C_GET_CELL_ITEM: pAction = new MHGetCellItem; break;
00091         case C_GET_CURSOR_POSITION: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ?
00092         case C_GET_ENGINE_SUPPORT: pAction = new MHGetEngineSupport; break;
00093         case C_GET_ENTRY_POINT: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // EntryField
00094         case C_GET_FILL_COLOUR: pAction = new MHGetFillColour; break;
00095         case C_GET_FIRST_ITEM: pAction = new MHGetFirstItem; break;
00096         case C_GET_HIGHLIGHT_STATUS: pAction = new MHGetHighlightStatus; break;
00097         case C_GET_INTERACTION_STATUS: pAction = new MHGetInteractionStatus; break;
00098         case C_GET_ITEM_STATUS: pAction = new MHGetItemStatus; break;
00099         case C_GET_LABEL: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break;// PushButton
00100         case C_GET_LAST_ANCHOR_FIRED: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break;// HyperText
00101         case C_GET_LINE_COLOUR: pAction = new MHGetLineColour; break;
00102         case C_GET_LINE_STYLE: pAction = new MHGetLineStyle; break;
00103         case C_GET_LINE_WIDTH: pAction = new MHGetLineWidth; break;
00104         case C_GET_LIST_ITEM: pAction = new MHGetListItem; break;
00105         case C_GET_LIST_SIZE: pAction = new MHGetListSize; break;
00106         case C_GET_OVERWRITE_MODE: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break;// ?
00107         case C_GET_PORTION: pAction = new MHGetPortion; break;
00108         case C_GET_POSITION: pAction = new MHGetPosition; break;
00109         case C_GET_RUNNING_STATUS: pAction = new MHGetRunningStatus; break;
00110         case C_GET_SELECTION_STATUS: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break;// ?
00111         case C_GET_SLIDER_VALUE: pAction = new MHGetSliderValue; break;
00112         case C_GET_TEXT_CONTENT: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break;// Text
00113         case C_GET_TEXT_DATA: pAction = new MHGetTextData; break;
00114         case C_GET_TOKEN_POSITION: pAction = new MHGetTokenPosition; break;
00115         case C_GET_VOLUME: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ?
00116         case C_LAUNCH: pAction = new MHLaunch; break;
00117         case C_LOCK_SCREEN: pAction = new MHLockScreen; break;
00118         case C_MODULO: pAction = new MHModulo; break;
00119         case C_MOVE: pAction = new MHMove; break;
00120         case C_MOVE_TO: pAction = new MHMoveTo; break;
00121         case C_MULTIPLY: pAction = new MHMultiply; break;
00122         case C_OPEN_CONNECTION: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ?
00123         case C_PRELOAD: pAction = new MHPreload; break;
00124         case C_PUT_BEFORE: pAction = new MHPutBefore; break;
00125         case C_PUT_BEHIND: pAction = new MHPutBehind; break;
00126         case C_QUIT: pAction = new MHQuit; break;
00127         case C_READ_PERSISTENT: pAction = new MHPersistent(":ReadPersistent", true); break;
00128         case C_RUN: pAction = new MHRun; break;
00129         case C_SCALE_BITMAP: pAction = new MHScaleBitmap; break;
00130         case C_SCALE_VIDEO: pAction = new MHScaleVideo; break;
00131         case C_SCROLL_ITEMS: pAction = new MHScrollItems; break;
00132         case C_SELECT: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // Button
00133         case C_SELECT_ITEM: pAction = new MHSelectItem; break;
00134         case C_SEND_EVENT: pAction = new MHSendEvent; break;
00135         case C_SEND_TO_BACK: pAction = new MHSendToBack; break;
00136         case C_SET_BOX_SIZE: pAction = new MHSetBoxSize; break;
00137         case C_SET_CACHE_PRIORITY: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ?
00138         case C_SET_COUNTER_END_POSITION: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // Stream
00139         case C_SET_COUNTER_POSITION: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // Stream
00140         case C_SET_COUNTER_TRIGGER: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // Stream
00141         case C_SET_CURSOR_POSITION: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ?
00142         case C_SET_CURSOR_SHAPE: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ?
00143         case C_SET_DATA: pAction = new MHSetData; break;
00144         case C_SET_ENTRY_POINT: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // EntryField
00145         case C_SET_FILL_COLOUR: pAction = new MHSetFillColour; break;
00146         case C_SET_FIRST_ITEM: pAction = new MHSetFirstItem; break;
00147         case C_SET_FONT_REF: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // Text
00148         case C_SET_HIGHLIGHT_STATUS: pAction = new MHSetHighlightStatus; break;
00149         case C_SET_INTERACTION_STATUS: pAction = new MHSetInteractionStatus; break;
00150         case C_SET_LABEL: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // PushButton
00151         case C_SET_LINE_COLOUR: pAction = new MHSetLineColour; break;
00152         case C_SET_LINE_STYLE: pAction = new MHSetLineStyle; break;
00153         case C_SET_LINE_WIDTH: pAction = new MHSetLineWidth; break;
00154         case C_SET_OVERWRITE_MODE: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // EntryField
00155         case C_SET_PALETTE_REF: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // Visible
00156         case C_SET_PORTION: pAction = new MHSetPortion; break;
00157         case C_SET_POSITION: pAction = new MHSetPosition; break;
00158         case C_SET_SLIDER_VALUE: pAction = new MHSetSliderValue; break;
00159         case C_SET_SPEED: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ?
00160         case C_SET_TIMER: pAction = new MHSetTimer; break;
00161         case C_SET_TRANSPARENCY: pAction = new MHSetTransparency; break;
00162         case C_SET_VARIABLE: pAction = new MHSetVariable; break;
00163         case C_SET_VOLUME: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ?
00164         case C_SPAWN: pAction = new MHSpawn; break;
00165         case C_STEP: pAction = new MHStep; break;
00166         case C_STOP: pAction = new MHStop; break;
00167         case C_STORE_PERSISTENT: pAction = new MHPersistent(":StorePersistent", false); break;
00168         case C_SUBTRACT: pAction = new MHSubtract; break;
00169         case C_TEST_VARIABLE: pAction = new MHTestVariable; break;
00170         case C_TOGGLE: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // Button
00171         case C_TOGGLE_ITEM: pAction = new MHToggleItem; break;
00172         case C_TRANSITION_TO: pAction = new MHTransitionTo; break;
00173         case C_UNLOAD: pAction = new MHUnload; break;
00174         case C_UNLOCK_SCREEN: pAction = new MHUnlockScreen; break;
00175         // UK MHEG added actions.
00176         case C_SET_BACKGROUND_COLOUR: pAction = new MHSetBackgroundColour; break;
00177         case C_SET_CELL_POSITION: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // ?
00178         case C_SET_INPUT_REGISTER: pAction = new MHSetInputRegister; break;
00179         case C_SET_TEXT_COLOUR: pAction = new MHSetTextColour; break;
00180         case C_SET_FONT_ATTRIBUTES: pAction = new MHSetFontAttributes; break;
00181         case C_SET_VIDEO_DECODE_OFFSET: pAction = new MHSetVideoDecodeOffset; break;
00182         case C_GET_VIDEO_DECODE_OFFSET: pAction = new MHGetVideoDecodeOffset; break;
00183         case C_GET_FOCUS_POSITION: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // HyperText
00184         case C_SET_FOCUS_POSITION: pAction = new MHUnimplementedAction(pElemAction->GetTagNo()); break; // HyperText
00185         case C_SET_BITMAP_DECODE_OFFSET: pAction = new MHSetBitmapDecodeOffset; break;
00186         case C_GET_BITMAP_DECODE_OFFSET: pAction = new MHGetBitmapDecodeOffset; break;
00187         case C_SET_SLIDER_PARAMETERS: pAction = new MHSetSliderParameters; break;
00188 
00189         default:
00190             MHLOG(MHLogWarning, QString("Unknown action %1").arg(pElemAction->GetTagNo()));
00191             // Future proofing: ignore any actions that we don't know about.
00192             // Obviously these can only arise in the binary coding.
00193             pAction = NULL;
00194         }
00195         if (pAction) {
00196             Append(pAction); // Add to the sequence.
00197             pAction->Initialise(pElemAction, engine);
00198         }
00199     }
00200 }
00201 
00202 void MHActionSequence::PrintMe(FILE *fd, int nTabs) const
00203 {
00204     for (int i = 0; i < Size(); i++) {
00205         GetAt(i)->PrintMe(fd, nTabs);
00206     }
00207 }