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-rwxr-xr-xgtk/PlatGTK.cxx305
1 files changed, 140 insertions, 165 deletions
diff --git a/gtk/PlatGTK.cxx b/gtk/PlatGTK.cxx
index b9b9ab029..5471a7289 100755
--- a/gtk/PlatGTK.cxx
+++ b/gtk/PlatGTK.cxx
@@ -71,9 +71,9 @@ GtkWidget *PWidget(WindowID wid) noexcept {
enum encodingType { singleByte, UTF8, dbcs };
// Holds a PangoFontDescription*.
-class FontHandle {
+class FontHandle : public Font {
public:
- PangoFontDescription *pfd;
+ PangoFontDescription *pfd = nullptr;
int characterSet;
FontHandle() noexcept : pfd(nullptr), characterSet(-1) {
}
@@ -81,6 +81,17 @@ public:
pfd = pfd_;
characterSet = characterSet_;
}
+ FontHandle(const FontParameters &fp) {
+ pfd = pango_font_description_new();
+ if (pfd) {
+ pango_font_description_set_family(pfd,
+ (fp.faceName[0] == '!') ? fp.faceName + 1 : fp.faceName);
+ pango_font_description_set_size(pfd, pangoUnitsFromDouble(fp.size));
+ pango_font_description_set_weight(pfd, static_cast<PangoWeight>(fp.weight));
+ pango_font_description_set_style(pfd, fp.italic ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL);
+ }
+ characterSet = fp.characterSet;
+ }
// Deleted so FontHandle objects can not be copied.
FontHandle(const FontHandle &) = delete;
FontHandle(FontHandle &&) = delete;
@@ -91,45 +102,19 @@ public:
pango_font_description_free(pfd);
pfd = nullptr;
}
- static FontHandle *CreateNewFont(const FontParameters &fp);
};
-FontHandle *FontHandle::CreateNewFont(const FontParameters &fp) {
- PangoFontDescription *pfd = pango_font_description_new();
- if (pfd) {
- pango_font_description_set_family(pfd,
- (fp.faceName[0] == '!') ? fp.faceName+1 : fp.faceName);
- pango_font_description_set_size(pfd, pangoUnitsFromDouble(fp.size));
- pango_font_description_set_weight(pfd, static_cast<PangoWeight>(fp.weight));
- pango_font_description_set_style(pfd, fp.italic ? PANGO_STYLE_ITALIC : PANGO_STYLE_NORMAL);
- return new FontHandle(pfd, fp.characterSet);
- }
-
- return nullptr;
-}
-
// X has a 16 bit coordinate space, so stop drawing here to avoid wrapping
constexpr int maxCoordinate = 32000;
-FontHandle *PFont(const Font &f) noexcept {
- return static_cast<FontHandle *>(f.GetID());
+const FontHandle *PFont(const Font *f) noexcept {
+ return dynamic_cast<const FontHandle *>(f);
}
}
-Font::Font() noexcept : fid(nullptr) {}
-
-Font::~Font() {}
-
-void Font::Create(const FontParameters &fp) {
- Release();
- fid = FontHandle::CreateNewFont(fp);
-}
-
-void Font::Release() {
- if (fid)
- delete static_cast<FontHandle *>(fid);
- fid = nullptr;
+std::shared_ptr<Font> Font::Allocate(const FontParameters &fp) {
+ return std::make_shared<FontHandle>(fp);
}
// Required on OS X
@@ -184,17 +169,17 @@ public:
std::unique_ptr<IScreenLineLayout> Layout(const IScreenLine *screenLine) override;
- void DrawTextBase(PRectangle rc, const Font &font_, XYPOSITION ybase, std::string_view text, ColourDesired fore);
- void DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, std::string_view text, ColourDesired fore, ColourDesired back) override;
- void DrawTextClipped(PRectangle rc, Font &font_, XYPOSITION ybase, std::string_view text, ColourDesired fore, ColourDesired back) override;
- void DrawTextTransparent(PRectangle rc, Font &font_, XYPOSITION ybase, std::string_view text, ColourDesired fore) override;
- void MeasureWidths(Font &font_, std::string_view text, XYPOSITION *positions) override;
- XYPOSITION WidthText(Font &font_, std::string_view text) override;
- XYPOSITION Ascent(Font &font_) override;
- XYPOSITION Descent(Font &font_) override;
- XYPOSITION InternalLeading(Font &font_) override;
- XYPOSITION Height(Font &font_) override;
- XYPOSITION AverageCharWidth(Font &font_) override;
+ void DrawTextBase(PRectangle rc, const Font *font_, XYPOSITION ybase, std::string_view text, ColourDesired fore);
+ void DrawTextNoClip(PRectangle rc, const Font *font_, XYPOSITION ybase, std::string_view text, ColourDesired fore, ColourDesired back) override;
+ void DrawTextClipped(PRectangle rc, const Font *font_, XYPOSITION ybase, std::string_view text, ColourDesired fore, ColourDesired back) override;
+ void DrawTextTransparent(PRectangle rc, const Font *font_, XYPOSITION ybase, std::string_view text, ColourDesired fore) override;
+ void MeasureWidths(const Font *font_, std::string_view text, XYPOSITION *positions) override;
+ XYPOSITION WidthText(const Font *font_, std::string_view text) override;
+ XYPOSITION Ascent(const Font *font_) override;
+ XYPOSITION Descent(const Font *font_) override;
+ XYPOSITION InternalLeading(const Font *font_) override;
+ XYPOSITION Height(const Font *font_) override;
+ XYPOSITION AverageCharWidth(const Font *font_) override;
void SetClip(PRectangle rc) override;
void FlushCachedState() override;
@@ -684,7 +669,7 @@ size_t MultiByteLenFromIconv(const Converter &conv, const char *s, size_t len) n
}
-void SurfaceImpl::DrawTextBase(PRectangle rc, const Font &font_, XYPOSITION ybase, std::string_view text,
+void SurfaceImpl::DrawTextBase(PRectangle rc, const Font *font_, XYPOSITION ybase, std::string_view text,
ColourDesired fore) {
PenColour(fore);
if (context) {
@@ -710,20 +695,20 @@ void SurfaceImpl::DrawTextBase(PRectangle rc, const Font &font_, XYPOSITION ybas
}
}
-void SurfaceImpl::DrawTextNoClip(PRectangle rc, Font &font_, XYPOSITION ybase, std::string_view text,
+void SurfaceImpl::DrawTextNoClip(PRectangle rc, const Font *font_, XYPOSITION ybase, std::string_view text,
ColourDesired fore, ColourDesired back) {
FillRectangle(rc, back);
DrawTextBase(rc, font_, ybase, text, fore);
}
// On GTK+, exactly same as DrawTextNoClip
-void SurfaceImpl::DrawTextClipped(PRectangle rc, Font &font_, XYPOSITION ybase, std::string_view text,
+void SurfaceImpl::DrawTextClipped(PRectangle rc, const Font *font_, XYPOSITION ybase, std::string_view text,
ColourDesired fore, ColourDesired back) {
FillRectangle(rc, back);
DrawTextBase(rc, font_, ybase, text, fore);
}
-void SurfaceImpl::DrawTextTransparent(PRectangle rc, Font &font_, XYPOSITION ybase, std::string_view text,
+void SurfaceImpl::DrawTextTransparent(PRectangle rc, const Font *font_, XYPOSITION ybase, std::string_view text,
ColourDesired fore) {
// Avoid drawing spaces in transparent mode
for (size_t i=0; i<text.length(); i++) {
@@ -774,102 +759,100 @@ public:
}
};
-void SurfaceImpl::MeasureWidths(Font &font_, std::string_view text, XYPOSITION *positions) {
- if (font_.GetID()) {
- if (PFont(font_)->pfd) {
- pango_layout_set_font_description(layout, PFont(font_)->pfd);
- if (et == UTF8) {
- // Simple and direct as UTF-8 is native Pango encoding
- int i = 0;
- pango_layout_set_text(layout, text.data(), text.length());
- ClusterIterator iti(layout, text.length());
- while (!iti.finished) {
- iti.Next();
- const int places = iti.curIndex - i;
- while (i < iti.curIndex) {
- // Evenly distribute space among bytes of this cluster.
- // Would be better to find number of characters and then
- // divide evenly between characters with each byte of a character
- // being at the same position.
- positions[i] = iti.position - (iti.curIndex - 1 - i) * iti.distance / places;
- i++;
- }
- }
- PLATFORM_ASSERT(static_cast<size_t>(i) == text.length());
- } else {
- int positionsCalculated = 0;
- if (et == dbcs) {
- SetConverter(PFont(font_)->characterSet);
- std::string utfForm = UTF8FromIconv(conv, text);
- if (!utfForm.empty()) {
- // Convert to UTF-8 so can ask Pango for widths, then
- // Loop through UTF-8 and DBCS forms, taking account of different
- // character byte lengths.
- Converter convMeasure("UCS-2", CharacterSetID(characterSet), false);
- pango_layout_set_text(layout, utfForm.c_str(), strlen(utfForm.c_str()));
- int i = 0;
- int clusterStart = 0;
- ClusterIterator iti(layout, strlen(utfForm.c_str()));
- while (!iti.finished) {
- iti.Next();
- const int clusterEnd = iti.curIndex;
- const int places = g_utf8_strlen(utfForm.c_str() + clusterStart, clusterEnd - clusterStart);
- int place = 1;
- while (clusterStart < clusterEnd) {
- size_t lenChar = MultiByteLenFromIconv(convMeasure, text.data()+i, text.length()-i);
- while (lenChar--) {
- positions[i++] = iti.position - (places - place) * iti.distance / places;
- positionsCalculated++;
- }
- clusterStart += UTF8BytesOfLead[static_cast<unsigned char>(utfForm[clusterStart])];
- place++;
- }
- }
- PLATFORM_ASSERT(static_cast<size_t>(i) == text.length());
- }
+void SurfaceImpl::MeasureWidths(const Font *font_, std::string_view text, XYPOSITION *positions) {
+ if (PFont(font_)->pfd) {
+ pango_layout_set_font_description(layout, PFont(font_)->pfd);
+ if (et == UTF8) {
+ // Simple and direct as UTF-8 is native Pango encoding
+ int i = 0;
+ pango_layout_set_text(layout, text.data(), text.length());
+ ClusterIterator iti(layout, text.length());
+ while (!iti.finished) {
+ iti.Next();
+ const int places = iti.curIndex - i;
+ while (i < iti.curIndex) {
+ // Evenly distribute space among bytes of this cluster.
+ // Would be better to find number of characters and then
+ // divide evenly between characters with each byte of a character
+ // being at the same position.
+ positions[i] = iti.position - (iti.curIndex - 1 - i) * iti.distance / places;
+ i++;
}
- if (positionsCalculated < 1) {
- const size_t lenPositions = text.length();
- // Either 8-bit or DBCS conversion failed so treat as 8-bit.
- SetConverter(PFont(font_)->characterSet);
- const bool rtlCheck = PFont(font_)->characterSet == SC_CHARSET_HEBREW ||
- PFont(font_)->characterSet == SC_CHARSET_ARABIC;
- std::string utfForm = UTF8FromIconv(conv, text);
- if (utfForm.empty()) {
- utfForm = UTF8FromLatin1(text);
- }
- pango_layout_set_text(layout, utfForm.c_str(), utfForm.length());
- size_t i = 0;
+ }
+ PLATFORM_ASSERT(static_cast<size_t>(i) == text.length());
+ } else {
+ int positionsCalculated = 0;
+ if (et == dbcs) {
+ SetConverter(PFont(font_)->characterSet);
+ std::string utfForm = UTF8FromIconv(conv, text);
+ if (!utfForm.empty()) {
+ // Convert to UTF-8 so can ask Pango for widths, then
+ // Loop through UTF-8 and DBCS forms, taking account of different
+ // character byte lengths.
+ Converter convMeasure("UCS-2", CharacterSetID(characterSet), false);
+ pango_layout_set_text(layout, utfForm.c_str(), strlen(utfForm.c_str()));
+ int i = 0;
int clusterStart = 0;
- // Each 8-bit input character may take 1 or 2 bytes in UTF-8
- // and groups of up to 3 may be represented as ligatures.
- ClusterIterator iti(layout, utfForm.length());
+ ClusterIterator iti(layout, strlen(utfForm.c_str()));
while (!iti.finished) {
iti.Next();
const int clusterEnd = iti.curIndex;
- const int ligatureLength = g_utf8_strlen(utfForm.c_str() + clusterStart, clusterEnd - clusterStart);
- if (rtlCheck && ((clusterEnd <= clusterStart) || (ligatureLength == 0) || (ligatureLength > 3))) {
- // Something has gone wrong: exit quickly but pretend all the characters are equally spaced:
- int widthLayout = 0;
- pango_layout_get_size(layout, &widthLayout, nullptr);
- const XYPOSITION widthTotal = floatFromPangoUnits(widthLayout);
- for (size_t bytePos=0; bytePos<lenPositions; bytePos++) {
- positions[bytePos] = widthTotal / lenPositions * (bytePos + 1);
+ const int places = g_utf8_strlen(utfForm.c_str() + clusterStart, clusterEnd - clusterStart);
+ int place = 1;
+ while (clusterStart < clusterEnd) {
+ size_t lenChar = MultiByteLenFromIconv(convMeasure, text.data()+i, text.length()-i);
+ while (lenChar--) {
+ positions[i++] = iti.position - (places - place) * iti.distance / places;
+ positionsCalculated++;
}
- return;
+ clusterStart += UTF8BytesOfLead[static_cast<unsigned char>(utfForm[clusterStart])];
+ place++;
}
- PLATFORM_ASSERT(ligatureLength > 0 && ligatureLength <= 3);
- for (int charInLig=0; charInLig<ligatureLength; charInLig++) {
- positions[i++] = iti.position - (ligatureLength - 1 - charInLig) * iti.distance / ligatureLength;
+ }
+ PLATFORM_ASSERT(static_cast<size_t>(i) == text.length());
+ }
+ }
+ if (positionsCalculated < 1) {
+ const size_t lenPositions = text.length();
+ // Either 8-bit or DBCS conversion failed so treat as 8-bit.
+ SetConverter(PFont(font_)->characterSet);
+ const bool rtlCheck = PFont(font_)->characterSet == SC_CHARSET_HEBREW ||
+ PFont(font_)->characterSet == SC_CHARSET_ARABIC;
+ std::string utfForm = UTF8FromIconv(conv, text);
+ if (utfForm.empty()) {
+ utfForm = UTF8FromLatin1(text);
+ }
+ pango_layout_set_text(layout, utfForm.c_str(), utfForm.length());
+ size_t i = 0;
+ int clusterStart = 0;
+ // Each 8-bit input character may take 1 or 2 bytes in UTF-8
+ // and groups of up to 3 may be represented as ligatures.
+ ClusterIterator iti(layout, utfForm.length());
+ while (!iti.finished) {
+ iti.Next();
+ const int clusterEnd = iti.curIndex;
+ const int ligatureLength = g_utf8_strlen(utfForm.c_str() + clusterStart, clusterEnd - clusterStart);
+ if (rtlCheck && ((clusterEnd <= clusterStart) || (ligatureLength == 0) || (ligatureLength > 3))) {
+ // Something has gone wrong: exit quickly but pretend all the characters are equally spaced:
+ int widthLayout = 0;
+ pango_layout_get_size(layout, &widthLayout, nullptr);
+ const XYPOSITION widthTotal = floatFromPangoUnits(widthLayout);
+ for (size_t bytePos=0; bytePos<lenPositions; bytePos++) {
+ positions[bytePos] = widthTotal / lenPositions * (bytePos + 1);
}
- clusterStart = clusterEnd;
+ return;
}
- while (i < lenPositions) {
- // If something failed, fill in rest of the positions
- positions[i++] = clusterStart;
+ PLATFORM_ASSERT(ligatureLength > 0 && ligatureLength <= 3);
+ for (int charInLig=0; charInLig<ligatureLength; charInLig++) {
+ positions[i++] = iti.position - (ligatureLength - 1 - charInLig) * iti.distance / ligatureLength;
}
- PLATFORM_ASSERT(i == text.length());
+ clusterStart = clusterEnd;
}
+ while (i < lenPositions) {
+ // If something failed, fill in rest of the positions
+ positions[i++] = clusterStart;
+ }
+ PLATFORM_ASSERT(i == text.length());
}
}
} else {
@@ -880,37 +863,31 @@ void SurfaceImpl::MeasureWidths(Font &font_, std::string_view text, XYPOSITION *
}
}
-XYPOSITION SurfaceImpl::WidthText(Font &font_, std::string_view text) {
- if (font_.GetID()) {
- if (PFont(font_)->pfd) {
- std::string utfForm;
- pango_layout_set_font_description(layout, PFont(font_)->pfd);
- if (et == UTF8) {
- pango_layout_set_text(layout, text.data(), text.length());
- } else {
- SetConverter(PFont(font_)->characterSet);
- utfForm = UTF8FromIconv(conv, text);
- if (utfForm.empty()) { // iconv failed so treat as Latin1
- utfForm = UTF8FromLatin1(text);
- }
- pango_layout_set_text(layout, utfForm.c_str(), utfForm.length());
+XYPOSITION SurfaceImpl::WidthText(const Font *font_, std::string_view text) {
+ if (PFont(font_)->pfd) {
+ std::string utfForm;
+ pango_layout_set_font_description(layout, PFont(font_)->pfd);
+ if (et == UTF8) {
+ pango_layout_set_text(layout, text.data(), text.length());
+ } else {
+ SetConverter(PFont(font_)->characterSet);
+ utfForm = UTF8FromIconv(conv, text);
+ if (utfForm.empty()) { // iconv failed so treat as Latin1
+ utfForm = UTF8FromLatin1(text);
}
- PangoLayoutLine *pangoLine = pango_layout_get_line_readonly(layout, 0);
- PangoRectangle pos {};
- pango_layout_line_get_extents(pangoLine, nullptr, &pos);
- return floatFromPangoUnits(pos.width);
+ pango_layout_set_text(layout, utfForm.c_str(), utfForm.length());
}
- return 1;
- } else {
- return 1;
+ PangoLayoutLine *pangoLine = pango_layout_get_line_readonly(layout, 0);
+ PangoRectangle pos {};
+ pango_layout_line_get_extents(pangoLine, nullptr, &pos);
+ return floatFromPangoUnits(pos.width);
}
+ return 1;
}
// Ascent and descent determined by Pango font metrics.
-XYPOSITION SurfaceImpl::Ascent(Font &font_) {
- if (!(font_.GetID()))
- return 1;
+XYPOSITION SurfaceImpl::Ascent(const Font *font_) {
XYPOSITION ascent = 0;
if (PFont(font_)->pfd) {
PangoFontMetrics *metrics = pango_context_get_metrics(pcontext,
@@ -925,9 +902,7 @@ XYPOSITION SurfaceImpl::Ascent(Font &font_) {
return ascent;
}
-XYPOSITION SurfaceImpl::Descent(Font &font_) {
- if (!(font_.GetID()))
- return 1;
+XYPOSITION SurfaceImpl::Descent(const Font *font_) {
if (PFont(font_)->pfd) {
PangoFontMetrics *metrics = pango_context_get_metrics(pcontext,
PFont(font_)->pfd, pango_context_get_language(pcontext));
@@ -939,15 +914,15 @@ XYPOSITION SurfaceImpl::Descent(Font &font_) {
return 0;
}
-XYPOSITION SurfaceImpl::InternalLeading(Font &) {
+XYPOSITION SurfaceImpl::InternalLeading(const Font *) {
return 0;
}
-XYPOSITION SurfaceImpl::Height(Font &font_) {
+XYPOSITION SurfaceImpl::Height(const Font *font_) {
return Ascent(font_) + Descent(font_);
}
-XYPOSITION SurfaceImpl::AverageCharWidth(Font &font_) {
+XYPOSITION SurfaceImpl::AverageCharWidth(const Font *font_) {
return WidthText(font_, "n");
}
@@ -1092,7 +1067,7 @@ void Window::InvalidateRectangle(PRectangle rc) {
}
}
-void Window::SetFont(Font &) {
+void Window::SetFont(const Font *) {
// Can not be done generically but only needed for ListBox
}
@@ -1240,7 +1215,7 @@ public:
}
#endif
}
- void SetFont(Font &font) override;
+ void SetFont(const Font *font) override;
void Create(Window &parent, int ctrlID, Point location_, int lineHeight_, bool unicodeMode_, int technology_) override;
void SetAverageCharWidth(int width) override;
void SetVisibleRows(int rows) override;
@@ -1508,7 +1483,7 @@ void ListBoxX::Create(Window &parent, int, Point, int, bool, int) {
GTK_WINDOW(top));
}
-void ListBoxX::SetFont(Font &font) {
+void ListBoxX::SetFont(const Font *font) {
// Only do for Pango font as there have been crashes for GDK fonts
if (Created() && PFont(font)->pfd) {
// Current font is Pango font
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-11 19:22:40 +0000