Aegisub/src/ass_dialogue.h

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// Copyright (c) 2005, Rodrigo Braz Monteiro
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Aegisub Group nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//
// Aegisub Project http://www.aegisub.org/
/// @file ass_dialogue.h
/// @see ass_dialogue.cpp
/// @ingroup subs_storage
///
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#include "ass_entry.h"
#include "ass_override.h"
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#include "ass_time.h"
#include <libaegisub/exception.h>
#include <boost/flyweight.hpp>
#include <boost/ptr_container/ptr_vector.hpp>
#include <vector>
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enum class AssBlockType {
BASE,
PLAIN,
COMMENT,
OVERRIDE,
DRAWING
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};
/// @class AssDialogueBlock
/// @brief AssDialogue Blocks
///
/// A block is each group in the text field of an AssDialogue
/// @verbatim
/// Yes, I {\i1}am{\i0} here.
///
/// Gets split in five blocks:
/// "Yes, I " (Plain)
/// "\\i1" (Override)
/// "am" (Plain)
/// "\\i0" (Override)
/// " here." (Plain)
///
/// Also note how {}s are discarded.
/// Override blocks are further divided in AssOverrideTags.
///
/// The GetText() method generates a new value for the "text" field from
/// the other fields in the specific class, and returns the new value.
/// @endverbatim
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class AssDialogueBlock {
protected:
/// Text of this block
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std::string text;
public:
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AssDialogueBlock(std::string text) : text(std::move(text)) { }
virtual ~AssDialogueBlock() { }
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virtual AssBlockType GetType() const = 0;
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virtual std::string GetText() { return text; }
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};
class AssDialogueBlockPlain : public AssDialogueBlock {
public:
using AssDialogueBlock::text;
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AssBlockType GetType() const override { return AssBlockType::PLAIN; }
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AssDialogueBlockPlain(std::string const& text = std::string()) : AssDialogueBlock(text) { }
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};
class AssDialogueBlockComment : public AssDialogueBlock {
public:
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AssBlockType GetType() const override { return AssBlockType::COMMENT; }
AssDialogueBlockComment(std::string const& text = std::string()) : AssDialogueBlock("{" + text + "}") { }
};
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class AssDialogueBlockDrawing : public AssDialogueBlock {
public:
using AssDialogueBlock::text;
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int Scale;
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AssBlockType GetType() const override { return AssBlockType::DRAWING; }
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AssDialogueBlockDrawing(std::string const& text, int scale) : AssDialogueBlock(text), Scale(scale) { }
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};
class AssDialogueBlockOverride : public AssDialogueBlock {
public:
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AssDialogueBlockOverride(std::string const& text = std::string()) : AssDialogueBlock(text) { }
std::vector<AssOverrideTag> Tags;
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AssBlockType GetType() const override { return AssBlockType::OVERRIDE; }
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std::string GetText() override;
void ParseTags();
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void AddTag(std::string const& tag);
/// Type of callback function passed to ProcessParameters
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typedef void (*ProcessParametersCallback)(std::string const&, AssOverrideParameter *, void *);
/// @brief Process parameters via callback
/// @param callback The callback function to call per tag parameter
/// @param userData User data to pass to callback function
void ProcessParameters(ProcessParametersCallback callback, void *userData);
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};
class AssDialogue : public AssEntry {
std::string GetData(bool ssa) const;
/// @brief Parse raw ASS data into everything else
/// @param data ASS line
void Parse(std::string const& data);
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public:
/// Unique ID of this line. Copies of the line for Undo/Redo purposes
/// preserve the unique ID, so that the equivalent lines can be found in
/// the different versions of the file.
const int Id;
/// Is this a comment line?
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bool Comment = false;
/// Layer number
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int Layer = 0;
/// Margins: 0 = Left, 1 = Right, 2 = Top (Vertical)
int Margin[3];
/// Starting time
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AssTime Start = 0;
/// Ending time
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AssTime End = 5000;
/// Style name
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boost::flyweight<std::string> Style{ "Default" };
/// Actor name
boost::flyweight<std::string> Actor;
/// Effect name
boost::flyweight<std::string> Effect;
/// Raw text data
boost::flyweight<std::string> Text;
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AssEntryGroup Group() const override { return AssEntryGroup::DIALOGUE; }
/// Parse text as ASS and return block information
std::auto_ptr<boost::ptr_vector<AssDialogueBlock>> ParseTags() const;
/// Strip all ASS tags from the text
void StripTags();
/// Strip a specific ASS tag from the text
/// Get text without tags
std::string GetStrippedText() const;
/// Update the text of the line from parsed blocks
void UpdateText(boost::ptr_vector<AssDialogueBlock>& blocks);
std::string GetEntryData() const override { return GetData(false); }
/// Get the line as SSA rather than ASS
std::string GetSSAText() const override { return GetData(true); }
/// Does this line collide with the passed line?
bool CollidesWith(const AssDialogue *target) const;
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AssEntry *Clone() const override;
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AssDialogue();
AssDialogue(AssDialogue const&);
AssDialogue(std::string const& data);
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~AssDialogue();
};