gdipp_server/helper.h

   1 #pragma once
   2
   3 #include "gdipp_config/render_config_static.h"
   4
   5 namespace gdipp
   6 {
   7
   8 const double pi = acos(-1.0);
   9
  10 // convert 26.6 fixed float type to 16.16 fixed point
  11 FIXED fixed_from_26dot6(signed long x);
  12
  13 // convert 16.16 fixed point to 26.6 format
  14 signed long fixed_to_26dot6(const FIXED &x);
  15
  16 // convert floating point to 16.16 format
  17 signed long float_to_16dot16(double x);
  18
  19 // convert 16.16 fixed float type to integer
  20 LONG int_from_16dot16(signed long x);
  21
  22 // convert 26.6 fixed float type to integer
  23 LONG int_from_26dot6(signed long x);
  24
  25 DWORD create_tls_index();
  26 BOOL free_tls_index(DWORD tls_index);
  27
  28 // high-performance division method to approximate number * numerator / 255
  29 //BYTE division_by_255(short number, short numerator);
  30
  31 uint128_t generate_render_trait(const LOGFONTW *logfont, int render_mode);
  32
  33 // apply alignment on the reference point and use it to calculate the baseline
  34 POINT get_baseline(UINT alignment, int x, int y, int width, int ascent, int descent);
  35
  36 // for given bitmap width and bit count, compute the bitmap pitch
  37 int get_bmp_pitch(int width, WORD bpp);
  38
  39 // retrieve BITMAPINFOHEADER from the selected bitmap of the given DC
  40 bool get_dc_bmp_header(HDC hdc, BITMAPINFOHEADER &dc_dc_bmp_header);
  41
  42 // get outline metrics of the DC
  43 OUTLINETEXTMETRICW *get_dc_metrics(HDC hdc, std::vector<BYTE> &metric_buf);
  44
  45 int get_glyph_bmp_width(const FT_Bitmap &bitmap);
  46
  47 //LONG get_glyph_run_width(const glyph_run *a_glyph_run, bool is_control_width);
  48
  49 LOGFONTW get_log_font(HDC hdc);
  50
  51 // return true and fill the corresponding FT_Glyph_To_Bitmap render mode if find an appropriate render mode
  52 // otherwise, return false
  53 bool get_render_mode(const render_config_static::render_mode_static &render_mode_conf, WORD dc_bmp_bpp, BYTE font_quality, FT_Render_Mode *render_mode);
  54
  55 bool operator<(const LOGFONTW &lf1, const LOGFONTW &lf2);
  56
  57 //const FT_Glyph make_empty_outline_glyph();
  58
  59 //bool mb_to_wc(const char *multi_byte_str, int count, std::wstring &wide_char_str);
  60
  61 BOOL paint_background(HDC hdc, const RECT *bg_rect, COLORREF bg_color);
  62
  63 }