mirror of
https://github.com/libretro/scummvm.git
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dcc90445f6
Make EditableWidget CommandSender svn-id: r41267
623 lines
19 KiB
C++
623 lines
19 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef GUI_THEME_ENGINE_H
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#define GUI_THEME_ENGINE_H
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#include "common/scummsys.h"
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#include "common/system.h"
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#include "common/fs.h"
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#include "graphics/surface.h"
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#include "graphics/fontman.h"
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#define SCUMMVM_THEME_VERSION_STR "SCUMMVM_STX0.4"
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namespace Graphics {
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struct DrawStep;
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class VectorRenderer;
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}
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namespace GUI {
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struct WidgetDrawData;
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struct DrawDataInfo;
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struct TextDataInfo;
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struct TextDrawData;
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class Dialog;
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class GuiObject;
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class ThemeEval;
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class ThemeItem;
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class ThemeParser;
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/**
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* DrawData sets enumeration.
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* Each DD set corresponds to the actual looks
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* of a widget in a given state.
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*/
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enum DrawData {
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kDDMainDialogBackground,
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kDDSpecialColorBackground,
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kDDPlainColorBackground,
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kDDDefaultBackground,
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kDDTextSelectionBackground,
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kDDWidgetBackgroundDefault,
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kDDWidgetBackgroundSmall,
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kDDWidgetBackgroundEditText,
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kDDWidgetBackgroundSlider,
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kDDButtonIdle,
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kDDButtonHover,
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kDDButtonDisabled,
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kDDSliderFull,
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kDDSliderHover,
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kDDSliderDisabled,
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kDDCheckboxDefault,
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kDDCheckboxDisabled,
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kDDCheckboxSelected,
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kDDTabActive,
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kDDTabInactive,
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kDDTabBackground,
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kDDScrollbarBase,
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kDDScrollbarButtonIdle,
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kDDScrollbarButtonHover,
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kDDScrollbarHandleIdle,
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kDDScrollbarHandleHover,
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kDDPopUpIdle,
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kDDPopUpHover,
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kDDPopUpDisabled,
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kDDCaret,
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kDDSeparator,
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kDrawDataMAX,
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kDDNone = -1
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};
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// FIXME: TextData is really a bad name, not conveying what this enum is about.
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enum TextData {
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kTextDataNone = -1,
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kTextDataDefault = 0,
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kTextDataHover,
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kTextDataDisabled,
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kTextDataInverted,
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kTextDataButton,
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kTextDataButtonHover,
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kTextDataNormalFont,
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kTextDataMAX
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};
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class ThemeEngine {
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protected:
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typedef Common::HashMap<Common::String, Graphics::Surface*> ImagesMap;
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friend class GUI::Dialog;
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friend class GUI::GuiObject;
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public:
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//! Vertical alignment of the text.
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enum TextAlignVertical {
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kTextAlignVInvalid,
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kTextAlignVBottom,
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kTextAlignVCenter,
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kTextAlignVTop
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};
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//! Widget background type
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enum WidgetBackground {
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kWidgetBackgroundNo, //!< No background at all
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kWidgetBackgroundPlain, //!< Simple background, this may not include borders
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kWidgetBackgroundBorder, //!< Same as kWidgetBackgroundPlain just with a border
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kWidgetBackgroundBorderSmall, //!< Same as kWidgetBackgroundPlain just with a small border
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kWidgetBackgroundEditText, //!< Background used for edit text fields
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kWidgetBackgroundSlider //!< Background used for sliders
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};
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//! Dialog background type
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enum DialogBackground {
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kDialogBackgroundMain,
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kDialogBackgroundSpecial,
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kDialogBackgroundPlain,
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kDialogBackgroundDefault
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};
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//! State of the widget to be drawn
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enum State {
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kStateDisabled, //!< Indicates that the widget is disabled, that does NOT include that it is invisible
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kStateEnabled, //!< Indicates that the widget is enabled
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kStateHighlight //!< Indicates that the widget is highlighted by the user
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};
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typedef State WidgetStateInfo;
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enum ScrollbarState {
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kScrollbarStateNo,
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kScrollbarStateUp,
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kScrollbarStateDown,
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kScrollbarStateSlider,
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kScrollbarStateSinglePage
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};
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//! Font style selector
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enum FontStyle {
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kFontStyleBold = 0, //!< A bold font. This is also the default font.
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kFontStyleNormal = 1, //!< A normal font.
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kFontStyleItalic = 2, //!< Italic styled font.
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kFontStyleFixedNormal = 3, //!< Fixed size font.
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kFontStyleFixedBold = 4, //!< Fixed size bold font.
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kFontStyleFixedItalic = 5, //!< Fixed size italic font.
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kFontStyleMax
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};
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//! Function used to process areas other than the current dialog
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enum ShadingStyle {
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kShadingNone, //!< No special post processing
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kShadingDim, //!< Dimming unused areas
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kShadingLuminance //!< Converting colors to luminance for unused areas
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};
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//! Special image ids for images used in the GUI
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enum kThemeImages {
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kImageLogo = 0, //!< ScummVM logo used in the launcher
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kImageLogoSmall, //!< ScummVM logo used in the GMM
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kImageSearch //!< Search tool image used in the launcher
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};
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/**
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* Graphics mode enumeration.
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* Each item represents a set of BPP and Renderer modes for a given
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* surface.
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*/
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enum GraphicsMode {
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kGfxDisabled = 0, //!< No GFX
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kGfxStandard16bit, //!< 2BPP with the standard (aliased) renderer.
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kGfxAntialias16bit //!< 2BPP with the optimized AA renderer.
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};
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/** Constant value to expand dirty rectangles, to make sure they are fully copied */
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static const int kDirtyRectangleThreshold = 1;
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struct Renderer {
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const char *name;
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const char *cfg;
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GraphicsMode mode;
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};
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static const Renderer _rendererModes[];
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static const uint _rendererModesSize;
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static const GraphicsMode _defaultRendererMode;
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static GraphicsMode findMode(const Common::String &cfg);
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static const char *findModeConfigName(GraphicsMode mode);
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/** Default constructor */
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ThemeEngine(Common::String id, GraphicsMode mode);
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/** Default destructor */
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~ThemeEngine();
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bool init();
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void clearAll();
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void refresh();
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void enable();
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void disable();
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/**
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* Implementation of the GUI::Theme API. Called when a
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* new dialog is opened. Note that the boolean parameter
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* meaning has been changed.
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*
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* @param enableBuffering If set to true, buffering is enabled for
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* drawing this dialog, and will continue enabled
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* until disabled.
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*/
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void openDialog(bool enableBuffering, ShadingStyle shading = kShadingNone);
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/**
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* The updateScreen() method is called every frame.
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* It processes all the drawing queues and then copies dirty rects
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* in the current Screen surface to the overlay.
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*/
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void updateScreen();
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/** @name FONT MANAGEMENT METHODS */
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//@{
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TextData fontStyleToData(FontStyle font) const {
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if (font == kFontStyleNormal)
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return kTextDataNormalFont;
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return kTextDataDefault;
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}
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const Graphics::Font *getFont(FontStyle font = kFontStyleBold) const;
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int getFontHeight(FontStyle font = kFontStyleBold) const;
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int getStringWidth(const Common::String &str, FontStyle font = kFontStyleBold) const;
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int getCharWidth(byte c, FontStyle font = kFontStyleBold) const;
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//@}
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/** @name WIDGET DRAWING METHODS */
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//@{
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void drawWidgetBackground(const Common::Rect &r, uint16 hints,
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WidgetBackground background = kWidgetBackgroundPlain, WidgetStateInfo state = kStateEnabled);
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void drawButton(const Common::Rect &r, const Common::String &str,
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WidgetStateInfo state = kStateEnabled, uint16 hints = 0);
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void drawSurface(const Common::Rect &r, const Graphics::Surface &surface,
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WidgetStateInfo state = kStateEnabled, int alpha = 256, bool themeTrans = false);
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void drawSlider(const Common::Rect &r, int width,
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WidgetStateInfo state = kStateEnabled);
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void drawCheckbox(const Common::Rect &r, const Common::String &str,
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bool checked, WidgetStateInfo state = kStateEnabled);
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void drawTab(const Common::Rect &r, int tabHeight, int tabWidth,
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const Common::Array<Common::String> &tabs, int active, uint16 hints,
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int titleVPad, WidgetStateInfo state = kStateEnabled);
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void drawScrollbar(const Common::Rect &r, int sliderY, int sliderHeight,
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ScrollbarState, WidgetStateInfo state = kStateEnabled);
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void drawPopUpWidget(const Common::Rect &r, const Common::String &sel,
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int deltax, WidgetStateInfo state = kStateEnabled, Graphics::TextAlign align = Graphics::kTextAlignLeft);
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void drawCaret(const Common::Rect &r, bool erase,
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WidgetStateInfo state = kStateEnabled);
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void drawLineSeparator(const Common::Rect &r, WidgetStateInfo state = kStateEnabled);
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void drawDialogBackground(const Common::Rect &r, DialogBackground type, WidgetStateInfo state = kStateEnabled);
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void drawText(const Common::Rect &r, const Common::String &str, WidgetStateInfo state = kStateEnabled, Graphics::TextAlign align = Graphics::kTextAlignCenter, bool inverted = false, int deltax = 0, bool useEllipsis = true, FontStyle font = kFontStyleBold);
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void drawChar(const Common::Rect &r, byte ch, const Graphics::Font *font, WidgetStateInfo state = kStateEnabled);
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//@}
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/**
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* Actual implementation of a dirty rect handling.
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* Dirty rectangles are queued on a list and are later used for the
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* actual drawing.
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*
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* @param r Area of the dirty rect.
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*/
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void addDirtyRect(Common::Rect r);
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/**
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* Returns the DrawData enumeration value that represents the given string
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* in the DrawDataDefaults enumeration.
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* It's slow, but called sparsely.
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*
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* @returns The drawdata enum value, or -1 if not found.
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* @param name The representing name, as found on Theme Description XML files.
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* @see kDrawDataDefaults[]
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*/
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DrawData parseDrawDataId(const Common::String &name) const;
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TextData getTextData(DrawData ddId) const;
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/**
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* Interface for ThemeParser class: Parsed DrawSteps are added via this function.
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* There is no return type because DrawSteps can always be added, unless something
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* goes horribly wrong.
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* The specified step will be added to the Steps list of the given DrawData id.
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*
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* @param drawDataId The representing DrawData name, as found on Theme Description XML files.
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* @param step The actual DrawStep struct to be added.
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*/
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void addDrawStep(const Common::String &drawDataId, const Graphics::DrawStep &step);
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/**
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* Interfacefor the ThemeParser class: Parsed DrawData sets are added via this function.
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* The goal of the function is to initialize each DrawData set before their DrawSteps can
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* be added, hence this must be called for each DD set before addDrawStep() can be called
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* for that given set.
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*
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* @param data The representing DrawData name, as found on Theme Description XML files.
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* @param cached Whether this DD set will be cached beforehand.
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*/
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bool addDrawData(const Common::String &data, bool cached);
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/**
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* Interface for the ThemeParser class: Loads a font to use on the GUI from the given
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* filename.
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*
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* @param fontName Identifier name for the font.
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* @param file Name of the font file.
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* @param r, g, b Color of the font.
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*/
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bool addFont(TextData textId, const Common::String &file, int r, int g, int b);
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/**
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* Interface for the ThemeParser class: Loads a bitmap file to use on the GUI.
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* The filename is also used as its identifier.
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*
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* @param filename Name of the bitmap file.
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*/
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bool addBitmap(const Common::String &filename);
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/**
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* Adds a new TextStep from the ThemeParser. This will be deprecated/removed once the
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* new Font API is in place. FIXME: Is that so ???
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*/
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bool addTextData(const Common::String &drawDataId, TextData textId, Graphics::TextAlign alignH, TextAlignVertical alignV);
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protected:
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/**
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* Returns if the Theme is ready to draw stuff on screen.
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* Must be called instead of just checking _initOk, because
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* this checks if the renderer is initialized AND if the theme
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* is loaded.
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*/
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bool ready() const {
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return _initOk && _themeOk;
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}
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/** Load the them from the file with the specified name. */
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void loadTheme(const Common::String &themeid);
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/**
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* Changes the active graphics mode of the GUI; may be used to either
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* initialize the GUI or to change the mode while the GUI is already running.
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*/
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void setGraphicsMode(GraphicsMode mode);
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public:
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/**
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* Finishes buffering: widgets from then on will be drawn straight on the screen
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* without drawing queues.
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*/
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inline void finishBuffering() { _buffering = false; }
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inline void startBuffering() { _buffering = true; }
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inline ThemeEval *getEvaluator() { return _themeEval; }
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inline Graphics::VectorRenderer *renderer() { return _vectorRenderer; }
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inline bool supportsImages() const { return true; }
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inline bool ownCursor() const { return _useCursor; }
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Graphics::Surface *getBitmap(const Common::String &name) {
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return _bitmaps.contains(name) ? _bitmaps[name] : 0;
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}
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const Graphics::Surface *getImageSurface(const kThemeImages n) const {
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switch (n) {
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case kImageLogo:
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return _bitmaps.contains("logo.bmp") ? _bitmaps["logo.bmp"] : 0;
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case kImageLogoSmall:
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return _bitmaps.contains("logo_small.bmp") ? _bitmaps["logo_small.bmp"] : 0;
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case kImageSearch:
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return _bitmaps.contains("search.bmp") ? _bitmaps["search.bmp"] : 0;
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default:
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return 0;
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}
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}
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/**
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* Interface for the Theme Parser: Creates a new cursor by loading the given
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* bitmap and sets it as the active cursor.
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*
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* @param filename File name of the bitmap to load.
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* @param hotspotX X Coordinate of the bitmap which does the cursor click.
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* @param hotspotY Y Coordinate of the bitmap which does the cursor click.
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* @param scale Scale at which the bitmap is supposed to be used.
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*/
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bool createCursor(const Common::String &filename, int hotspotX, int hotspotY, int scale);
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/**
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* Wrapper for restoring data from the Back Buffer to the screen.
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* The actual processing is done in the VectorRenderer.
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*
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* @param r Area to restore.
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*/
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void restoreBackground(Common::Rect r);
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const Common::String &getThemeName() const { return _themeName; }
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const Common::String &getThemeId() const { return _themeId; }
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int getGraphicsMode() const { return _graphicsMode; }
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protected:
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/**
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* Initializes the drawing screen surfaces, _screen and _backBuffer.
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* If the surfaces already exist, they are cleared and re-initialized.
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*
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* @param backBuffer Sets whether the _backBuffer surface should be initialized.
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* @template PixelType C type which specifies the size of each pixel.
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* Defaults to uint16 (2 BPP for the surfaces)
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*/
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template<typename PixelType> void screenInit(bool backBuffer = true);
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/**
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* Loads the given theme into the ThemeEngine.
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*
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* @param themeId Theme identifier.
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* @returns true if the theme was successfully loaded.
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*/
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bool loadThemeXML(const Common::String &themeId);
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/**
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* Loads the default theme file (the embedded XML file found
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* in ThemeDefaultXML.cpp).
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* Called only when no other themes are available.
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*/
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bool loadDefaultXML();
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/**
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* Unloads the currently loaded theme so another one can
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* be loaded.
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*/
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void unloadTheme();
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const Graphics::Font *loadFont(const Common::String &filename);
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const Graphics::Font *loadFontFromArchive(const Common::String &filename);
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Common::String genCacheFilename(const char *filename);
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/**
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* Actual Dirty Screen handling function.
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* Handles all the dirty squares in the list, merges and optimizes
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* them when possible and draws them to the screen.
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* Called from updateScreen()
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*/
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void renderDirtyScreen();
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/**
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* Generates a DrawQueue item and enqueues it so it's drawn to the screen
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* when the drawing queue is processed.
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*
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* If Buffering is enabled, the DrawQueue item will be automatically placed
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* on its corresponding queue.
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* If Buffering is disabled, the DrawQueue item will be processed immediately
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* and drawn to the screen.
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*
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* This function is called from all the Widget Drawing methods.
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*/
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void queueDD(DrawData type, const Common::Rect &r, uint32 dynamic = 0, bool restore = false);
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void queueDDText(TextData type, const Common::Rect &r, const Common::String &text, bool restoreBg,
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bool elipsis, Graphics::TextAlign alignH = Graphics::kTextAlignLeft, TextAlignVertical alignV = kTextAlignVTop, int deltax = 0);
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void queueBitmap(const Graphics::Surface *bitmap, const Common::Rect &r, bool alpha);
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/**
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* DEBUG: Draws a white square and writes some text next to it.
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*/
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void debugWidgetPosition(const char *name, const Common::Rect &r);
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public:
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struct ThemeDescriptor {
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Common::String name;
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Common::String id;
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Common::String filename;
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};
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/**
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* Lists all theme files useable.
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*/
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static void listUsableThemes(Common::List<ThemeDescriptor> &list);
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private:
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static bool themeConfigUsable(const Common::FSNode &node, Common::String &themeName);
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static bool themeConfigParseHeader(Common::String header, Common::String &themeName);
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static Common::String getThemeFile(const Common::String &id);
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static Common::String getThemeId(const Common::String &filename);
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static void listUsableThemes(Common::FSNode node, Common::List<ThemeDescriptor> &list, int depth=-1);
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protected:
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OSystem *_system; /** Global system object. */
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/** Vector Renderer object, does the actual drawing on screen */
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Graphics::VectorRenderer *_vectorRenderer;
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/** XML Parser, does the Theme parsing instead of the default parser */
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GUI::ThemeParser *_parser;
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/** Theme getEvaluator (changed from GUI::Eval to add functionality) */
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GUI::ThemeEval *_themeEval;
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/** Main screen surface. This is blitted straight into the overlay. */
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Graphics::Surface _screen;
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/** Backbuffer surface. Stores previous states of the screen to blit back */
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Graphics::Surface _backBuffer;
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/** Sets whether the current drawing is being buffered (stored for later
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processing) or drawn directly to the screen. */
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bool _buffering;
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/** Bytes per pixel of the Active Drawing Surface (i.e. the screen) */
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int _bytesPerPixel;
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/** Current graphics mode */
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GraphicsMode _graphicsMode;
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/** Font info. */
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Common::String _fontName;
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const Graphics::Font *_font;
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/**
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* Array of all the DrawData elements than can be drawn to the screen.
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* Must be full so the renderer can work.
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*/
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WidgetDrawData *_widgets[kDrawDataMAX];
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/** Array of all the text fonts that can be drawn. */
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TextDrawData *_texts[kTextDataMAX];
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ImagesMap _bitmaps;
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Graphics::PixelFormat _overlayFormat;
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/** List of all the dirty screens that must be blitted to the overlay. */
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Common::List<Common::Rect> _dirtyScreen;
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/** Queue with all the drawing that must be done to the Back Buffer */
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Common::List<ThemeItem *> _bufferQueue;
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/** Queue with all the drawing that must be done to the screen */
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|
Common::List<ThemeItem *> _screenQueue;
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bool _initOk; //!< Class and renderer properly initialized
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bool _themeOk; //!< Theme data successfully loaded.
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bool _enabled; //!< Whether the Theme is currently shown on the overlay
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|
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Common::String _themeName; //!< Name of the currently loaded theme
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|
Common::String _themeId;
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Common::String _themeFile;
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Common::Archive *_themeArchive;
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|
|
|
bool _useCursor;
|
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int _cursorHotspotX, _cursorHotspotY;
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int _cursorTargetScale;
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|
enum {
|
|
MAX_CURS_COLORS = 255
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|
};
|
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byte *_cursor;
|
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bool _needPaletteUpdates;
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uint _cursorWidth, _cursorHeight;
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byte _cursorPal[4*MAX_CURS_COLORS];
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byte _cursorPalSize;
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};
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} // end of namespace GUI.
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#endif
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