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LibTTF: Split up Font.h into smaller internal header files.

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This commit is contained in:
Srimanta Barua 2020-06-14 12:02:19 +05:30 • committed by Andreas Kling
parent 1e1d2cdedf
commit ec08e9e780
7 changed files with 553 additions and 426 deletions
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19
Libraries/LibTTF/Cmap.cpp
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@ -24,7 +24,8 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "Font.h"
#include "Cmap.h"
#include <AK/Optional.h>
namespace TTF {
@ -32,7 +33,7 @@ extern u16 be_u16(const u8* ptr);
extern u32 be_u32(const u8* ptr);
extern i16 be_i16(const u8* ptr);
Font::Cmap::Subtable::Platform Font::Cmap::Subtable::platform_id() const
Cmap::Subtable::Platform Cmap::Subtable::platform_id() const
{
switch (m_raw_platform_id) {
case 0: return Platform::Unicode;
@ -43,7 +44,7 @@ Font::Cmap::Subtable::Platform Font::Cmap::Subtable::platform_id() const
}
}
Font::Cmap::Subtable::Format Font::Cmap::Subtable::format() const
Cmap::Subtable::Format Cmap::Subtable::format() const
{
switch (be_u16(m_slice.offset_pointer(0))) {
case 0: return Format::ByteEncoding;
@ -59,12 +60,12 @@ Font::Cmap::Subtable::Format Font::Cmap::Subtable::format() const
}
}
u32 Font::Cmap::num_subtables() const
u32 Cmap::num_subtables() const
{
return be_u16(m_slice.offset_pointer((u32) Offsets::NumTables));
}
Optional<Font::Cmap::Subtable> Font::Cmap::subtable(u32 index) const
Optional<Cmap::Subtable> Cmap::subtable(u32 index) const
{
if (index >= num_subtables()) {
return {};
@ -79,7 +80,7 @@ Optional<Font::Cmap::Subtable> Font::Cmap::subtable(u32 index) const
}
// FIXME: This only handles formats 4 (SegmentToDelta) and 12 (SegmentedCoverage) for now.
u32 Font::Cmap::Subtable::glyph_id_for_codepoint(u32 codepoint) const
u32 Cmap::Subtable::glyph_id_for_codepoint(u32 codepoint) const
{
switch (format()) {
case Format::SegmentToDelta:
@ -91,7 +92,7 @@ u32 Font::Cmap::Subtable::glyph_id_for_codepoint(u32 codepoint) const
}
}
u32 Font::Cmap::Subtable::glyph_id_for_codepoint_table_4(u32 codepoint) const
u32 Cmap::Subtable::glyph_id_for_codepoint_table_4(u32 codepoint) const
{
u32 segcount_x2 = be_u16(m_slice.offset_pointer((u32) Table4Offsets::SegCountX2));
if (m_slice.size() < segcount_x2 * (u32) Table4Sizes::NonConstMultiplier + (u32) Table4Sizes::Constant) {
@ -118,7 +119,7 @@ u32 Font::Cmap::Subtable::glyph_id_for_codepoint_table_4(u32 codepoint) const
return 0;
}
u32 Font::Cmap::Subtable::glyph_id_for_codepoint_table_12(u32 codepoint) const
u32 Cmap::Subtable::glyph_id_for_codepoint_table_12(u32 codepoint) const
{
u32 num_groups = be_u32(m_slice.offset_pointer((u32) Table12Offsets::NumGroups));
ASSERT(m_slice.size() >= (u32) Table12Sizes::Header + (u32) Table12Sizes::Record * num_groups);
@ -137,7 +138,7 @@ u32 Font::Cmap::Subtable::glyph_id_for_codepoint_table_12(u32 codepoint) const
return 0;
}
u32 Font::Cmap::glyph_id_for_codepoint(u32 codepoint) const
u32 Cmap::glyph_id_for_codepoint(u32 codepoint) const
{
auto opt_subtable = subtable(m_active_index);
if (!opt_subtable.has_value()) {