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Really show correct G0 and G2 character set in widgets

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Amendment to 7b59c78. This should prevent spurious NOS character sets from
appearing in the widgets, and should also prevent the G0 and G2 character
sets from getting mixed up in the widgets when those triplets are within
object definitions.

The G0 and G2 character set in the widgets may still be incorrect in corner
cases of objects invoked within areas of the page where the character set
has been changed either with the ESC/Switch spacing attribute or with the
"modified G0/G2 character set designation" triplet.
This commit is contained in:
G.K.MacGregor
2023-08-15 18:11:40 +01:00
parent 6185ca7110
commit f36143e10f
3 changed files with 26 additions and 18 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
decode.cpp
View File

@@ -466,8 +466,8 @@ void TeletextPageDecode::decodeRow(int r)
if (c == 0 || c == 40 || c == 56) {
level1CharSet = m_level1DefaultCharSet;
m_level1ActivePainter.g0CharSet = m_g0CharacterMap.value(m_defaultG0andG2, 0);
m_level1ActivePainter.g2CharSet = m_g2CharacterMap.value(m_defaultG0andG2, 7);
m_level1ActivePainter.result.g0Set = m_g0CharacterMap.value(m_defaultG0andG2, 0);
m_level1ActivePainter.result.g2Set = m_g2CharacterMap.value(m_defaultG0andG2, 7);
m_level1ActivePainter.attribute.flash.mode = 0;
m_level1ActivePainter.attribute.flash.ratePhase = 0;
@@ -661,12 +661,12 @@ void TeletextPageDecode::decodeRow(int r)
break;
case 0x28: // Modified G0 and G2 character set designation
if (m_level == 3 || triplet.data() == m_defaultG0andG2 || triplet.data() == m_secondG0andG2) {
painter->g0CharSet = m_g0CharacterMap.value(triplet.data(), 0);
painter->g2CharSet = m_g2CharacterMap.value(triplet.data(), 7);
painter->result.g0Set = m_g0CharacterMap.value(triplet.data(), 0);
painter->result.g2Set = m_g2CharacterMap.value(triplet.data(), 7);
} else if (m_secondG0andG2 == -1) {
m_secondG0andG2 = triplet.data();
painter->g0CharSet = m_g0CharacterMap.value(triplet.data(), 0);
painter->g2CharSet = m_g2CharacterMap.value(triplet.data(), 7);
painter->result.g0Set = m_g0CharacterMap.value(triplet.data(), 0);
painter->result.g2Set = m_g2CharacterMap.value(triplet.data(), 7);
}
break;
case 0x2c: // Display attributes
@@ -754,9 +754,9 @@ void TeletextPageDecode::decodeRow(int r)
if (result.code != 0x00) {
m_level1ActivePainter.result.character = result;
if (result.set == 0)
m_level1ActivePainter.result.character.set = m_level1ActivePainter.g0CharSet;
m_level1ActivePainter.result.character.set = m_level1ActivePainter.result.g0Set;
else if (result.set == 2)
m_level1ActivePainter.result.character.set = m_level1ActivePainter.g2CharSet;
m_level1ActivePainter.result.character.set = m_level1ActivePainter.result.g2Set;
x26Character = 1;
}
} else if (m_level >= 2)
@@ -779,10 +779,10 @@ void TeletextPageDecode::decodeRow(int r)
painter->result.character = result;
switch (result.set) {
case 0:
painter->result.character.set = painter->g0CharSet;
painter->result.character.set = painter->result.g0Set;
break;
case 2:
painter->result.character.set = painter->g2CharSet;
painter->result.character.set = painter->result.g2Set;
break;
case 24:
if (painter->attribute.display.underlineSeparated)

7
decode.h
View File

@@ -46,6 +46,8 @@ public:
unsigned char cellCharacterCode(int r, int c) const { return m_cell[r][c].character.code; };
int cellCharacterSet(int r, int c) const { return m_cell[r][c].character.set; };
int cellCharacterDiacritical(int r, int c) const { return m_cell[r][c].character.diacritical; };
int cellG0CharacterSet(int r, int c) const { return m_cell[r][c].g0Set; };
int cellG2CharacterSet(int r, int c) const { return m_cell[r][c].g2Set; };
int cellForegroundCLUT(int r, int c) const { return m_cell[r][c].attribute.foregroundCLUT; };
int cellBackgroundCLUT(int r, int c) const { return m_cell[r][c].attribute.backgroundCLUT; };
QColor cellForegroundQColor(int, int);
@@ -164,6 +166,8 @@ private:
textCharacter character;
textAttributes attribute;
CharacterFragment fragment=NormalSize;
int g0Set=0;
int g2Set=7;
};
friend inline bool operator!=(const textCell &lhs, const textCell &rhs)
@@ -179,9 +183,6 @@ private:
textCell rightHalfCell;
textCell bottomHalfCell[72];
int g0CharSet=0;
int g2CharSet=7;
int styleSpreadRows=0;
int setProportionalRows[72], clearProportionalRows[72];
int setBoldRows[72], clearBoldRows[72];

17
x26model.cpp
View File

@@ -368,13 +368,16 @@ QVariant X26Model::data(const QModelIndex &index, int role) const
if (triplet.data() >= 0x20)
return m_fontBitmap.rawBitmap()->copy((triplet.data()-32)*12, 26*10, 12, 10);
break;
case 0x29: // G0 character
case 0x2f: // G2 character
if (triplet.data() >= 0x20)
return m_fontBitmap.rawBitmap()->copy((triplet.data()-32)*12, m_parentMainWidget->pageDecode()->cellG2CharacterSet(triplet.activePositionRow(), triplet.activePositionColumn())*10, 12, 10);
break;
case 0x29: // G0 character
case 0x30 ... 0x3f: // G0 diacritical mark
if (triplet.data() >= 0x20)
return m_fontBitmap.rawBitmap()->copy((triplet.data()-32)*12, m_parentMainWidget->pageDecode()->cellCharacterSet(triplet.activePositionRow(), triplet.activePositionColumn())*10, 12, 10);
return m_fontBitmap.rawBitmap()->copy((triplet.data()-32)*12, m_parentMainWidget->pageDecode()->cellG0CharacterSet(triplet.activePositionRow(), triplet.activePositionColumn())*10, 12, 10);
break;
};
}
if (role == Qt::EditRole && index.column() == 2)
return triplet.modeExt();
@@ -488,12 +491,16 @@ QVariant X26Model::data(const QModelIndex &index, int role) const
return triplet.data() >> 4;
}
break;
case 0x29: // G0 character
case 0x2f: // G2 character
// Qt::UserRole+1 is character number, returned by default below
if (role == Qt::UserRole+2) // Character set
return m_parentMainWidget->pageDecode()->cellG2CharacterSet(triplet.activePositionRow(), triplet.activePositionColumn());
break;
case 0x29: // G0 character
case 0x30 ... 0x3f: // G0 diacritical mark
// Qt::UserRole+1 is character number, returned by default below
if (role == Qt::UserRole+2) // Character set
return m_parentMainWidget->pageDecode()->cellCharacterSet(triplet.activePositionRow(), triplet.activePositionColumn());
return m_parentMainWidget->pageDecode()->cellG0CharacterSet(triplet.activePositionRow(), triplet.activePositionColumn());
break;
};