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-rw-r--r--frontends/windows/font.c106
1 files changed, 69 insertions, 37 deletions
diff --git a/frontends/windows/font.c b/frontends/windows/font.c
index f50ba6e9e..3407ec4e0 100644
--- a/frontends/windows/font.c
+++ b/frontends/windows/font.c
@@ -19,7 +19,7 @@
/**
* \file
- * Windows font handling implementation.
+ * Windows font handling and character encoding implementation.
*/
#include "utils/config.h"
@@ -38,36 +38,57 @@
HWND font_hwnd;
-nserror utf8_to_font_encoding(const struct font_desc* font,
- const char *string,
- size_t len,
- char **result)
+/* exported interface documented in windows/font.h */
+nserror
+utf8_to_font_encoding(const struct font_desc* font,
+ const char *string,
+ size_t len,
+ char **result)
{
return utf8_to_enc(string, font->encoding, len, result);
}
-static nserror utf8_to_local_encoding(const char *string,
- size_t len,
- char **result)
+
+/**
+ * Convert a string to UCS2 from UTF8
+ *
+ * \param[in] string source string
+ * \param[in] len source string length
+ * \param[out] result The UCS2 string
+ */
+static nserror
+utf8_to_local_encoding(const char *string, size_t len, char **result)
{
return utf8_to_enc(string, "UCS-2", len, result);
}
-static nserror utf8_from_local_encoding(const char *string, size_t len,
- char **result)
+
+/**
+ * Convert a string to UTF8 from local encoding
+ *
+ * \param[in] string source string
+ * \param[in] len source string length
+ * \param[out] result The UTF8 string
+ */
+static nserror
+utf8_from_local_encoding(const char *string, size_t len, char **result)
{
assert(string && result);
- if (len == 0)
+ if (len == 0) {
len = strlen(string);
+ }
*result = strndup(string, len);
- if (!(*result))
+ if (!(*result)) {
return NSERROR_NOMEM;
+ }
return NSERROR_OK;
}
+
+/* exported interface documented in windows/font.h */
HFONT get_font(const plot_font_style_t *style)
{
char *face = NULL;
@@ -122,16 +143,18 @@ HFONT get_font(const plot_font_style_t *style)
free(face);
if (font == NULL) {
- if (style->family == PLOT_FONT_FAMILY_MONOSPACE)
+ if (style->family == PLOT_FONT_FAMILY_MONOSPACE) {
font = (HFONT) GetStockObject(ANSI_FIXED_FONT);
- else
+ } else {
font = (HFONT) GetStockObject(ANSI_VAR_FONT);
+ }
}
if (font == NULL)
font = (HFONT) GetStockObject(SYSTEM_FONT);
return font;
}
+
/**
* Measure the width of a string.
*
@@ -139,13 +162,13 @@ HFONT get_font(const plot_font_style_t *style)
* \param[in] string UTF-8 string to measure
* \param[in] length length of string, in bytes
* \param[out] width updated to width of string[0..length)
- * \return NSERROR_OK on success otherwise apropriate error code
+ * \return NSERROR_OK on success otherwise appropriate error code
*/
static nserror
win32_font_width(const plot_font_style_t *style,
- const char *string,
- size_t length,
- int *width)
+ const char *string,
+ size_t length,
+ int *width)
{
HDC hdc;
HFONT font;
@@ -184,15 +207,15 @@ win32_font_width(const plot_font_style_t *style,
* \param x x coordinate to search for
* \param char_offset updated to offset in string of actual_x, [0..length]
* \param actual_x updated to x coordinate of character closest to x
- * \return NSERROR_OK on success otherwise apropriate error code
+ * \return NSERROR_OK on success otherwise appropriate error code
*/
static nserror
win32_font_position(const plot_font_style_t *style,
- const char *string,
- size_t length,
- int x,
- size_t *char_offset,
- int *actual_x)
+ const char *string,
+ size_t length,
+ int x,
+ size_t *char_offset,
+ int *actual_x)
{
HDC hdc;
HFONT font;
@@ -211,8 +234,8 @@ win32_font_position(const plot_font_style_t *style,
if ((GetTextExtentExPointA(hdc, string, length, x, &offset, NULL,&s) != 0) &&
(GetTextExtentPoint32A(hdc, string, offset, &s) != 0)) {
- *char_offset = (size_t)offset;
- *actual_x = s.cx;
+ *char_offset = (size_t)offset;
+ *actual_x = s.cx;
} else {
ret = NSERROR_UNKNOWN;
}
@@ -235,7 +258,7 @@ win32_font_position(const plot_font_style_t *style,
* \param x width available
* \param char_offset updated to offset in string of actual_x, [0..length]
* \param actual_x updated to x coordinate of character closest to x
- * \return NSERROR_OK on success otherwise apropriate error code
+ * \return NSERROR_OK on success otherwise appropriate error code
*
* On exit, [char_offset == 0 ||
* string[char_offset] == ' ' ||
@@ -243,16 +266,21 @@ win32_font_position(const plot_font_style_t *style,
*/
static nserror
win32_font_split(const plot_font_style_t *style,
- const char *string,
- size_t length,
- int x,
- size_t *char_offset,
- int *actual_x)
+ const char *string,
+ size_t length,
+ int x,
+ size_t *char_offset,
+ int *actual_x)
{
int c_off;
nserror ret = NSERROR_UNKNOWN;
- if (win32_font_position(style, string, length, x, char_offset, actual_x)) {
+ if (win32_font_position(style,
+ string,
+ length,
+ x,
+ char_offset,
+ actual_x)) {
c_off = *char_offset;
if (*char_offset == length) {
ret = NSERROR_OK;
@@ -271,7 +299,10 @@ win32_font_split(const plot_font_style_t *style,
}
}
- success = win32_font_width(style, string, *char_offset, actual_x);
+ success = win32_font_width(style,
+ string,
+ *char_offset,
+ actual_x);
if (success) {
ret = NSERROR_OK;
}
@@ -279,13 +310,14 @@ win32_font_split(const plot_font_style_t *style,
}
/*
- LOG("ret %d Split %u chars at %ipx: Split at char %i (%ipx) - %.*s",
- ret, length, x, *char_offset, *actual_x, *char_offset, string);
+ LOG("ret %d Split %u chars at %ipx: Split at char %i (%ipx) - %.*s",
+ ret, length, x, *char_offset, *actual_x, *char_offset, string);
*/
return ret;
}
+/** win32 font operations table */
static struct gui_layout_table layout_table = {
.width = win32_font_width,
.position = win32_font_position,
@@ -294,7 +326,7 @@ static struct gui_layout_table layout_table = {
struct gui_layout_table *win32_layout_table = &layout_table;
-
+/** win32 utf8 encoding operations table */
static struct gui_utf8_table utf8_table = {
.utf8_to_local = utf8_to_local_encoding,
.local_to_utf8 = utf8_from_local_encoding,
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 01:46:05 +0000