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API description related to LAYOUTINFO

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Vincent Wei
2019-03-20 16:31:41 +08:00
parent 3571d88f3d
commit ee179e6995
5 changed files with 182 additions and 82 deletions
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include/gdi.h
+38 -4
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@@ -12201,6 +12201,12 @@ MG_EXPORT int GUIAPI UChars2AChars(LOGFONT* logfont, const Uchar32* ucs,
*/
#define GRF_OVERFLOW_WRAP_ANYWHERE 0x00200000
#define GRF_OVERFLOW_ELLIPSIZE_MASK 0x000F0000
#define GRF_OVERFLOW_ELLIPSIZE_NONE 0x00000000
#define GRF_OVERFLOW_ELLIPSIZE_START 0x00010000
#define GRF_OVERFLOW_ELLIPSIZE_MIDDLE 0x00020000
#define GRF_OVERFLOW_ELLIPSIZE_END 0x00030000
#define GRF_ALIGN_MASK 0x0000F000
/**
* Text content is aligned to the start edge of the line box.
@@ -12372,6 +12378,14 @@ typedef struct _GLYPHPOS {
* The y coordinate of the glyph position.
*/
int y;
/**
* The x offset of the glyph position.
*/
int x_off;
/**
* The y offset of the glyph position.
*/
int y_off;
/**
* Whether suppress the glyph.
*/
@@ -12586,8 +12600,7 @@ MG_EXPORT BOOL GUIAPI DestroyTextRunsInfo(TEXTRUNSINFO* run_info);
* \sa GetUCharsUntilParagraphBoundary, GetShapedGlyphsComplex,
* GetGlyphsExtentInfo, GetGlyphsPositionInfo, DrawShapedGlyphString
*/
MG_EXPORT BOOL GUIAPI ShapeTextRunsBaisc(TEXTRUNSINFO* run_info,
Uint32 render_flags);
MG_EXPORT BOOL GUIAPI InitBasicShapingEngine(TEXTRUNSINFO* run_info);
#ifdef _MGCOMPLEX_SCRIPTS
@@ -12657,11 +12670,32 @@ MG_EXPORT BOOL GUIAPI ShapeTextRunsBaisc(TEXTRUNSINFO* run_info,
* \sa GetUCharsUntilParagraphBoundary, GetShapedGlyphsBasic,
* GetGlyphsExtentInfo, GetGlyphsPositionInfo, DrawShapedGlyphString
*/
MG_EXPORT BOOL GUIAPI ShapeTextRunsComplex(TEXTRUNSINFO* run_info,
Uint32 render_flags);
MG_EXPORT BOOL GUIAPI InitComplexShapingEngine(TEXTRUNSINFO* run_info);
#endif /* _MGCOMPLEX_SCRIPTS */
typedef struct _LAYOUTINFO LAYOUTINFO;
typedef struct _LAYOUTLINE LAYOUTLINE;
MG_EXPORT LAYOUTINFO* GUIAPI CreateLayoutInfo(
const TEXTRUNSINFO* run_info, Uint32 render_flags,
const BreakOppo* break_oppos, BOOL persist_lines,
int letter_spacing, int word_spacing, int tab_size);
MG_EXPORT BOOL GUIAPI DestroyLayoutInfo(LAYOUTINFO* layout_info);
typedef void (*CB_GLYPH_LAID_OUT) (GHANDLE ctxt,
LOGFONT* lf, RGBCOLOR color, Glyph32 gv, const GLYPHPOS* pos);
MG_EXPORT int GUIAPI LayoutNextLine(LAYOUTINFO* layout_info,
int* x, int* y, int max_extent, SIZE* line_size,
CB_GLYPH_LAID_OUT cb_laid_out, GHANDLE ctxt);
MG_EXPORT int GUIAPI GetShapedGlyphsFittingLine(const TEXTRUNSINFO* run_info,
const BreakOppo* break_oppos,
int uc_start_index, int x, int y, Uint32 render_flags,
int letter_spacing, int word_spacing, int tab_size, int max_extent,
SIZE* line_size, GLYPHPOS** glyph_pos, int* nr_glyphs);
/**
* \fn int GUIAPI GetGlyphsExtentInfo()
*
src/newgdi/Makefile.am
+1 -1
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@@ -24,7 +24,7 @@ endif
HDR_FILES = drawtext.h mi.h midc.h mistruct.h miwideline.h \
pixel_ops.h mifillarc.h mispans.h polygon.h mifpoly.h \
textrunsinfo.h
textrunsinfo.h layoutinfo.h
libnewgdi_la_SOURCES = $(SRC_FILES) $(HDR_FILES)
src/newgdi/layoutinfo.h
+113
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@@ -0,0 +1,113 @@
/*
* This file is part of MiniGUI, a mature cross-platform windowing
* and Graphics User Interface (GUI) support system for embedded systems
* and smart IoT devices.
*
* Copyright (C) 2002~2018, Beijing FMSoft Technologies Co., Ltd.
* Copyright (C) 1998~2002, WEI Yongming
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Or,
*
* As this program is a library, any link to this program must follow
* GNU General Public License version 3 (GPLv3). If you cannot accept
* GPLv3, you need to be licensed from FMSoft.
*
* If you have got a commercial license of this program, please use it
* under the terms and conditions of the commercial license.
*
* For more information about the commercial license, please refer to
* <http://www.minigui.com/en/about/licensing-policy/>.
*/
/*
** layoutinfo.h: Internal interface related to LAYOUTINFO.
**
** Create by WEI Yongming at 2019/03/20
*/
#ifndef _MG_NEWGDI_LAYOUTINFO_H
#define _MG_NEWGDI_LAYOUTINFO_H
#include "list.h"
#include "textruninfo.h"
typedef struct _GLYPHRUN GLYPHRUN;
typedef struct _GLYPHINFO GLYPHINFO;
struct _GLYPHINFO {
Glyph32 gv;
int x_off;
int y_off;
int width;
Uint32 is_cluster_start:1;
};
struct _GLYPHSTRING {
GLYPHINFO* glyphs;
int* log_clusters;
int nr_glyphs;
int reserved;
} GLYPHSTRING;
struct _GLYPHRUN {
struct list_head list;
TEXTRUN* text_run; // the text run to which this glyph run belongs
GLYPHSTRING* glyphstr; // the glyph string
};
struct _LAYOUTLINE {
struct list_head list;
GLYPHLAYOUTINFO* layout_info;
int* log_widths; // the widths of the logical chars
struct list_head run_head; // the list head for glyph runs
int idx; // the index in uchar string
int len; // the length in uchar string
Uint8 first_line:1; // is first line of the paragraph?
Uint8 resolved_dir:3; // resolved direction of the line
Uint8 all_even:1; // flag indicating all level is even
Uint8 all_odd:1; // flag indicating all level is odd
};
struct _GLYPHLAYOUTINFO {
const TEXTRUNSINFO* runinfo;
const BreakOppo* break_oppos;
Uint32 render_flags;
int letter_spacing;
int word_spacing;
int tab_size;
struct list_head line_head; // the list head of lines
LAYOUTLINE *curr_line; // current line
int idx_next_char;
};
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif // _MG_NEWGDI_LAYOUTINFO_H
src/newgdi/textrunsinfo.c
+8 -18
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@@ -263,8 +263,6 @@ static BOOL state_process_run (TEXTRUNSTATE *state)
run->dir = state->runinfo->run_dir;
run->ort = state->ort_rsv;
run->lf = create_logfont_for_run(state->runinfo, run);
run->gs = NULL;
run->ngs = 0;
run->idx = state->run_start - state->text;
run->len = state->run_end - state->run_start;
list_add_tail(&run->list, &state->runinfo->run_head);
@@ -560,7 +558,7 @@ BOOL GUIAPI SetPartFontInTextRuns(TEXTRUNSINFO* runinfo,
return FALSE;
// can not change font after shaped the glyphs
if (runinfo->se.engine != NULL)
if (runinfo->sei.inst != NULL)
return FALSE;
// can not change font for empty runs
@@ -624,13 +622,11 @@ BOOL GUIAPI ResetFontInTextRuns(TEXTRUNSINFO* runinfo, const char* logfont_name)
list_del(runinfo->run_head.prev);
if (run->lf)
release_logfont_for_run(runinfo, run);
if (runinfo->se.engine)
runinfo->se.destroy_glyphs(runinfo->se.engine, run->gs);
free(run);
}
if (runinfo->se.engine) {
runinfo->se.destroy_engine(runinfo->se.engine);
if (runinfo->sei.inst) {
runinfo->sei.free(runinfo->sei.inst);
}
free(runinfo->fontname);
@@ -658,16 +654,12 @@ BOOL GUIAPI ResetDirectionInTextRuns(TEXTRUNSINFO* runinfo,
list_for_each(i, &runinfo->run_head) {
TEXTRUN* run = (TEXTRUN*)i;
if (runinfo->se.engine && run->gs) {
runinfo->se.destroy_glyphs(runinfo->se.engine, run->gs);
}
set_run_dir(runinfo, run, run_dir, glyph_orient);
}
if (runinfo->se.engine) {
runinfo->se.destroy_engine(runinfo->se.engine);
runinfo->se.engine = NULL;
if (runinfo->sei.inst) {
runinfo->sei.free(runinfo->sei.inst);
runinfo->sei.inst = NULL;
}
return TRUE;
@@ -722,13 +714,11 @@ BOOL GUIAPI DestroyTextRunsInfo(TEXTRUNSINFO* runinfo)
list_del(runinfo->run_head.prev);
if (run->lf)
release_logfont_for_run(runinfo, run);
if (runinfo->se.engine)
runinfo->se.destroy_glyphs(runinfo->se.engine, run->gs);
free(run);
}
if (runinfo->se.engine) {
runinfo->se.destroy_engine(runinfo->se.engine);
if (runinfo->sei.inst) {
runinfo->sei.free(runinfo->sei.inst);
}
free(runinfo->fontname);
src/newgdi/textrunsinfo.h
+22 -59
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@@ -43,55 +43,49 @@
#include "list.h"
typedef Glyph32 (*CB_GET_GLYPH_INFO) (void* engine,
void* glyph_infos, int index, int* cluster);
typedef struct _TEXTRUN TEXTRUN;
typedef struct _GLYPHSTRING GLYPHSTRING;
typedef struct _SEINSTANCE SEINSTANCE;
typedef struct _TEXTCOLORMAP TEXTCOLORMAP;
typedef BOOL (*CB_DESTROY_GLYPHS) (void* engine, void* glyph_infos);
typedef BOOL (*CB_SHAPE_TEXT_RUN)(SEINSTANCE* instance,
const TEXTRUN* run, GLYPHSTRING* gs);
typedef BOOL (*CB_DESTROY_ENGINE) (void* engine);
typedef BOOL (*CB_DESTROY_INSTANCE)(SEINSTANCE* instance);
typedef struct _SHAPPINGENGINE {
/* The pointer to the shaping engine */
void* engine;
typedef struct _SHAPINGENGINEINFO SHAPINGENGINEINFO;
/* the callback reverse the glyphs */
CB_REVERSE_ARRAY reverse_glyphs;
struct _SHAPINGENGINEINFO {
/* The pointer to the shaping engine instance */
SEINSTANCE* inst;
/* The callback returns the glyph value and cluster
from a void glyph information */
CB_GET_GLYPH_INFO get_glyph_info;
/* callback to shap a text run */
CB_SHAPE_TEXT_RUN shape;
/* the callback destroy the shaped glyph info */
CB_DESTROY_GLYPHS destroy_glyphs;
/* callback to destroy the shaping engine instance */
CB_DESTROY_INSTANCE free;
};
/* the callback destroy the shapping engine instance */
CB_DESTROY_ENGINE destroy_engine;
} SHAPPINGENGINE;
typedef struct _TEXTRUN {
struct _TEXTRUN {
struct list_head list;
LOGFONT* lf; // the logfont for this run
void* gs; // the shaped glyph information
int idx; // start index in the Unicode string
int len; // the number of Unicode characters
int ngs; // the number of shaped glyphs
Uint32 lc:8; // language code
Uint32 st:8; // script type
Uint32 el:8; // the bidi embedding level
Uint32 dir:4; // the run direction
Uint32 ort:2; // the glyph orientation
} TEXTRUN;
};
typedef struct _TEXTCOLORMAP {
struct _TEXTCOLORMAP {
struct list_head list;
int si;
int len;
RGBCOLOR color;
} TEXTCOLORMAP;
};
struct _TEXTRUNSINFO {
/* The following fields will be initialized by CreateGlyphRunInfo. */
@@ -110,39 +104,8 @@ struct _TEXTRUNSINFO {
Uint32 run_dir:4; // the run direction specified
Uint32 base_level:1; // the paragraph direction; 0 for LTR, 1 for RTL
/* The following fields will be initialized by the shapping engine. */
SHAPPINGENGINE se; // the shapping engine
};
typedef struct _GLYPHLAYOUTINFO GLYPHLAYOUTINFO;
typedef struct _GLYPHRUN {
struct list_head list;
TEXTRUN* text_run; // the glyph run
int start_idx; // the index in glyph run
int nr_glyphs; // the number of glyphs
} GLYPHRUN;
typedef struct _GLYPHLINE {
GLYPHLAYOUTINFO* layout_info;
struct list_head run_head; // the list head for glyph layout runs
int idx; // the index in uchar string
int len; // the length in uchar string
Uint8 first_line:1; // is first line of the paragraph?
Uint8 resolved_dir:3; // resolved direction of the line
Uint8 all_even:1; // flag indicating all level is even
Uint8 all_odd:1; // flag indicating all level is odd
} GLYPHLINE;
struct _GLYPHLAYOUTINFO {
const TEXTRUNSINFO* runinfo;
struct list_head line_head;
int nr_lines;
/* The following fields will be initialized by the shaping engine. */
SHAPINGENGINEINFO sei; // the shaping engine information
};
#ifdef __cplusplus