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patch 9.0.1987: win32: font-size calculation can be improved

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Problem:  win32: font-size calculation can be improved
Solution: calculate font size before the window size

Support calculating the new size even if a bitmap font is used.
Calculate the new font size before actually change the Window size.

closes: #13280
related: #11812, #13252

Signed-off-by: Christian Brabandt <cb@256bit.org>
Co-authored-by: Ken Takata <kentkt@csc.jp>
This commit is contained in:
Ken Takata
2023-10-05 20:20:58 +02:00
committed by Christian Brabandt
parent c661e11e9c
commit da5da654de
2 changed files with 40 additions and 10 deletions
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48
src/gui_w32.c
View File

@ -1588,7 +1588,7 @@ GetAverageFontSize(HDC hdc, SIZE *size)
* Get the character size of a font.
*/
static void
GetFontSize(GuiFont font)
GetFontSize(GuiFont font, int *char_width, int *char_height)
{
HWND hwnd = GetDesktopWindow();
HDC hdc = GetWindowDC(hwnd);
@ -1599,21 +1599,32 @@ GetFontSize(GuiFont font)
GetTextMetrics(hdc, &tm);
GetAverageFontSize(hdc, &size);
gui.char_width = size.cx + tm.tmOverhang;
gui.char_height = tm.tmHeight + p_linespace;
if (char_width)
*char_width = size.cx + tm.tmOverhang;
if (char_height)
*char_height = tm.tmHeight + p_linespace;
SelectFont(hdc, hfntOld);
ReleaseDC(hwnd, hdc);
}
/*
* Update the character size in "gui" structure with the specified font.
*/
static void
UpdateFontSize(GuiFont font)
{
GetFontSize(font, &gui.char_width, &gui.char_height);
}
/*
* Adjust gui.char_height (after 'linespace' was changed).
*/
int
gui_mch_adjust_charheight(void)
{
GetFontSize(gui.norm_font);
UpdateFontSize(gui.norm_font);
return OK;
}
@ -3517,7 +3528,7 @@ gui_mch_init_font(char_u *font_name, int fontset UNUSED)
gui_mch_free_font(gui.norm_font);
gui.norm_font = font;
current_font_height = lfOrig.lfHeight;
GetFontSize(font);
UpdateFontSize(font);
p = logfont2name(lfOrig);
if (p != NULL)
@ -4742,16 +4753,33 @@ _OnMenuSelect(HWND hwnd, WPARAM wParam, LPARAM lParam)
static BOOL
_OnGetDpiScaledSize(HWND hwnd, UINT dpi, SIZE *size)
{
int old_width, old_height;
int new_width, new_height;
LOGFONTW lf;
HFONT font;
//TRACE("DPI: %d, SIZE=(%d,%d), s_dpi: %d", dpi, size->cx, size->cy, s_dpi);
// Calculate new approximate size.
// FIXME: If a bitmap font (e.g. FixedSys) is used, the font size may not
// be changed. In that case, the calculated size can be wrong.
size->cx = size->cx * dpi / s_dpi;
size->cy = size->cy * dpi / s_dpi;
GetFontSize(gui.norm_font, &old_width, &old_height); // Current size
GetObjectW((HFONT)gui.norm_font, sizeof(lf), &lf);
lf.lfHeight = lf.lfHeight * (int)dpi / s_dpi;
font = CreateFontIndirectW(&lf);
if (font)
{
GetFontSize((GuiFont)font, &new_width, &new_height); // New size
DeleteFont(font);
}
else
{
new_width = old_width;
new_height = old_height;
}
size->cx = size->cx * new_width / old_width;
size->cy = size->cy * new_height / old_height;
//TRACE("New approx. SIZE=(%d,%d)", size->cx, size->cy);
return FALSE;
return TRUE;
}
static LRESULT

2
src/version.c
View File

@ -704,6 +704,8 @@ static char *(features[]) =
static int included_patches[] =
{ /* Add new patch number below this line */
/**/
1987,
/**/
1986,
/**/