--- /dev/null
+// Copyright (c) 2015 Ryan Prichard
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+
+#include "ConsoleFont.h"
+
+#include <windows.h>
+#include <stdio.h>
+#include <string.h>
+#include <wchar.h>
+
+#include <algorithm>
+#include <string>
+#include <tuple>
+#include <utility>
+#include <vector>
+
+#include "../shared/DebugClient.h"
+#include "../shared/OsModule.h"
+#include "../shared/StringUtil.h"
+#include "../shared/WindowsVersion.h"
+#include "../shared/WinptyAssert.h"
+#include "../shared/winpty_snprintf.h"
+
+namespace {
+
+#define COUNT_OF(x) (sizeof(x) / sizeof((x)[0]))
+
+// See https://en.wikipedia.org/wiki/List_of_CJK_fonts
+const wchar_t kLucidaConsole[] = L"Lucida Console";
+const wchar_t kMSGothic[] = { 0xff2d, 0xff33, 0x0020, 0x30b4, 0x30b7, 0x30c3, 0x30af, 0 }; // 932, Japanese
+const wchar_t kNSimSun[] = { 0x65b0, 0x5b8b, 0x4f53, 0 }; // 936, Chinese Simplified
+const wchar_t kGulimChe[] = { 0xad74, 0xb9bc, 0xccb4, 0 }; // 949, Korean
+const wchar_t kMingLight[] = { 0x7d30, 0x660e, 0x9ad4, 0 }; // 950, Chinese Traditional
+
+struct FontSize {
+ short size;
+ int width;
+};
+
+struct Font {
+ const wchar_t *faceName;
+ unsigned int family;
+ short size;
+};
+
+// Ideographs in East Asian languages take two columns rather than one.
+// In the console screen buffer, a "full-width" character will occupy two
+// cells of the buffer, the first with attribute 0x100 and the second with
+// attribute 0x200.
+//
+// Windows does not correctly identify code points as double-width in all
+// configurations. It depends heavily on the code page, the font facename,
+// and (somehow) even the font size. In the 437 code page (MS-DOS), for
+// example, no codepoints are interpreted as double-width. When the console
+// is in an East Asian code page (932, 936, 949, or 950), then sometimes
+// selecting a "Western" facename like "Lucida Console" or "Consolas" doesn't
+// register, or if the font *can* be chosen, then the console doesn't handle
+// double-width correctly. I tested the double-width handling by writing
+// several code points with WriteConsole and checking whether one or two cells
+// were filled.
+//
+// In the Japanese code page (932), Microsoft's default font is MS Gothic.
+// MS Gothic double-width handling seems to be broken with console versions
+// prior to Windows 10 (including Windows 10's legacy mode), and it's
+// especially broken in Windows 8 and 8.1.
+//
+// Test by running: misc/Utf16Echo A2 A3 2014 3044 30FC 4000
+//
+// The first three codepoints are always rendered as half-width with the
+// Windows Japanese fonts. (Of these, the first two must be half-width,
+// but U+2014 could be either.) The last three are rendered as full-width,
+// and they are East_Asian_Width=Wide.
+//
+// Windows 7 fails by modeling all codepoints as full-width with font
+// sizes 22 and above.
+//
+// Windows 8 gets U+00A2, U+00A3, U+2014, U+30FC, and U+4000 wrong, but
+// using a point size not listed in the console properties dialog
+// (e.g. "9") is less wrong:
+//
+// | code point |
+// font | 00A2 00A3 2014 3044 30FC 4000 | cell size
+// ------------+---------------------------------+----------
+// 8 | F F F F H H | 4x8
+// 9 | F F F F F F | 5x9
+// 16 | F F F F H H | 8x16
+// raster 6x13 | H H H F F H(*) | 6x13
+//
+// (*) The Raster Font renders U+4000 as a white box (i.e. an unsupported
+// character).
+//
+
+// See:
+// - misc/Font-Report-June2016 directory for per-size details
+// - misc/font-notes.txt
+// - misc/Utf16Echo.cc, misc/FontSurvey.cc, misc/SetFont.cc, misc/GetFont.cc
+
+const FontSize kLucidaFontSizes[] = {
+ { 5, 3 },
+ { 6, 4 },
+ { 8, 5 },
+ { 10, 6 },
+ { 12, 7 },
+ { 14, 8 },
+ { 16, 10 },
+ { 18, 11 },
+ { 20, 12 },
+ { 36, 22 },
+ { 48, 29 },
+ { 60, 36 },
+ { 72, 43 },
+};
+
+// Japanese. Used on Vista and Windows 7.
+const FontSize k932GothicVista[] = {
+ { 6, 3 },
+ { 8, 4 },
+ { 10, 5 },
+ { 12, 6 },
+ { 13, 7 },
+ { 15, 8 },
+ { 17, 9 },
+ { 19, 10 },
+ { 21, 11 },
+ // All larger fonts are more broken w.r.t. full-size East Asian characters.
+};
+
+// Japanese. Used on Windows 8, 8.1, and the legacy 10 console.
+const FontSize k932GothicWin8[] = {
+ // All of these characters are broken w.r.t. full-size East Asian
+ // characters, but they're equally broken.
+ { 5, 3 },
+ { 7, 4 },
+ { 9, 5 },
+ { 11, 6 },
+ { 13, 7 },
+ { 15, 8 },
+ { 17, 9 },
+ { 20, 10 },
+ { 22, 11 },
+ { 24, 12 },
+ // include extra-large fonts for small terminals
+ { 36, 18 },
+ { 48, 24 },
+ { 60, 30 },
+ { 72, 36 },
+};
+
+// Japanese. Used on the new Windows 10 console.
+const FontSize k932GothicWin10[] = {
+ { 6, 3 },
+ { 8, 4 },
+ { 10, 5 },
+ { 12, 6 },
+ { 14, 7 },
+ { 16, 8 },
+ { 18, 9 },
+ { 20, 10 },
+ { 22, 11 },
+ { 24, 12 },
+ // include extra-large fonts for small terminals
+ { 36, 18 },
+ { 48, 24 },
+ { 60, 30 },
+ { 72, 36 },
+};
+
+// Chinese Simplified.
+const FontSize k936SimSun[] = {
+ { 6, 3 },
+ { 8, 4 },
+ { 10, 5 },
+ { 12, 6 },
+ { 14, 7 },
+ { 16, 8 },
+ { 18, 9 },
+ { 20, 10 },
+ { 22, 11 },
+ { 24, 12 },
+ // include extra-large fonts for small terminals
+ { 36, 18 },
+ { 48, 24 },
+ { 60, 30 },
+ { 72, 36 },
+};
+
+// Korean.
+const FontSize k949GulimChe[] = {
+ { 6, 3 },
+ { 8, 4 },
+ { 10, 5 },
+ { 12, 6 },
+ { 14, 7 },
+ { 16, 8 },
+ { 18, 9 },
+ { 20, 10 },
+ { 22, 11 },
+ { 24, 12 },
+ // include extra-large fonts for small terminals
+ { 36, 18 },
+ { 48, 24 },
+ { 60, 30 },
+ { 72, 36 },
+};
+
+// Chinese Traditional.
+const FontSize k950MingLight[] = {
+ { 6, 3 },
+ { 8, 4 },
+ { 10, 5 },
+ { 12, 6 },
+ { 14, 7 },
+ { 16, 8 },
+ { 18, 9 },
+ { 20, 10 },
+ { 22, 11 },
+ { 24, 12 },
+ // include extra-large fonts for small terminals
+ { 36, 18 },
+ { 48, 24 },
+ { 60, 30 },
+ { 72, 36 },
+};
+
+// Some of these types and functions are missing from the MinGW headers.
+// Others are undocumented.
+
+struct AGENT_CONSOLE_FONT_INFO {
+ DWORD nFont;
+ COORD dwFontSize;
+};
+
+struct AGENT_CONSOLE_FONT_INFOEX {
+ ULONG cbSize;
+ DWORD nFont;
+ COORD dwFontSize;
+ UINT FontFamily;
+ UINT FontWeight;
+ WCHAR FaceName[LF_FACESIZE];
+};
+
+// undocumented XP API
+typedef BOOL WINAPI SetConsoleFont_t(
+ HANDLE hOutput,
+ DWORD dwFontIndex);
+
+// undocumented XP API
+typedef DWORD WINAPI GetNumberOfConsoleFonts_t();
+
+// XP and up
+typedef BOOL WINAPI GetCurrentConsoleFont_t(
+ HANDLE hOutput,
+ BOOL bMaximumWindow,
+ AGENT_CONSOLE_FONT_INFO *lpConsoleCurrentFont);
+
+// XP and up
+typedef COORD WINAPI GetConsoleFontSize_t(
+ HANDLE hConsoleOutput,
+ DWORD nFont);
+
+// Vista and up
+typedef BOOL WINAPI GetCurrentConsoleFontEx_t(
+ HANDLE hConsoleOutput,
+ BOOL bMaximumWindow,
+ AGENT_CONSOLE_FONT_INFOEX *lpConsoleCurrentFontEx);
+
+// Vista and up
+typedef BOOL WINAPI SetCurrentConsoleFontEx_t(
+ HANDLE hConsoleOutput,
+ BOOL bMaximumWindow,
+ AGENT_CONSOLE_FONT_INFOEX *lpConsoleCurrentFontEx);
+
+#define GET_MODULE_PROC(mod, funcName) \
+ m_##funcName = reinterpret_cast<funcName##_t*>((mod).proc(#funcName)); \
+
+#define DEFINE_ACCESSOR(funcName) \
+ funcName##_t &funcName() const { \
+ ASSERT(valid()); \
+ return *m_##funcName; \
+ }
+
+class XPFontAPI {
+public:
+ XPFontAPI() : m_kernel32(L"kernel32.dll") {
+ GET_MODULE_PROC(m_kernel32, GetCurrentConsoleFont);
+ GET_MODULE_PROC(m_kernel32, GetConsoleFontSize);
+ }
+
+ bool valid() const {
+ return m_GetCurrentConsoleFont != NULL &&
+ m_GetConsoleFontSize != NULL;
+ }
+
+ DEFINE_ACCESSOR(GetCurrentConsoleFont)
+ DEFINE_ACCESSOR(GetConsoleFontSize)
+
+private:
+ OsModule m_kernel32;
+ GetCurrentConsoleFont_t *m_GetCurrentConsoleFont;
+ GetConsoleFontSize_t *m_GetConsoleFontSize;
+};
+
+class UndocumentedXPFontAPI : public XPFontAPI {
+public:
+ UndocumentedXPFontAPI() : m_kernel32(L"kernel32.dll") {
+ GET_MODULE_PROC(m_kernel32, SetConsoleFont);
+ GET_MODULE_PROC(m_kernel32, GetNumberOfConsoleFonts);
+ }
+
+ bool valid() const {
+ return this->XPFontAPI::valid() &&
+ m_SetConsoleFont != NULL &&
+ m_GetNumberOfConsoleFonts != NULL;
+ }
+
+ DEFINE_ACCESSOR(SetConsoleFont)
+ DEFINE_ACCESSOR(GetNumberOfConsoleFonts)
+
+private:
+ OsModule m_kernel32;
+ SetConsoleFont_t *m_SetConsoleFont;
+ GetNumberOfConsoleFonts_t *m_GetNumberOfConsoleFonts;
+};
+
+class VistaFontAPI : public XPFontAPI {
+public:
+ VistaFontAPI() : m_kernel32(L"kernel32.dll") {
+ GET_MODULE_PROC(m_kernel32, GetCurrentConsoleFontEx);
+ GET_MODULE_PROC(m_kernel32, SetCurrentConsoleFontEx);
+ }
+
+ bool valid() const {
+ return this->XPFontAPI::valid() &&
+ m_GetCurrentConsoleFontEx != NULL &&
+ m_SetCurrentConsoleFontEx != NULL;
+ }
+
+ DEFINE_ACCESSOR(GetCurrentConsoleFontEx)
+ DEFINE_ACCESSOR(SetCurrentConsoleFontEx)
+
+private:
+ OsModule m_kernel32;
+ GetCurrentConsoleFontEx_t *m_GetCurrentConsoleFontEx;
+ SetCurrentConsoleFontEx_t *m_SetCurrentConsoleFontEx;
+};
+
+static std::vector<std::pair<DWORD, COORD> > readFontTable(
+ XPFontAPI &api, HANDLE conout, DWORD maxCount) {
+ std::vector<std::pair<DWORD, COORD> > ret;
+ for (DWORD i = 0; i < maxCount; ++i) {
+ COORD size = api.GetConsoleFontSize()(conout, i);
+ if (size.X == 0 && size.Y == 0) {
+ break;
+ }
+ ret.push_back(std::make_pair(i, size));
+ }
+ return ret;
+}
+
+static void dumpFontTable(HANDLE conout, const char *prefix) {
+ const int kMaxCount = 1000;
+ if (!isTracingEnabled()) {
+ return;
+ }
+ XPFontAPI api;
+ if (!api.valid()) {
+ trace("dumpFontTable: cannot dump font table -- missing APIs");
+ return;
+ }
+ std::vector<std::pair<DWORD, COORD> > table =
+ readFontTable(api, conout, kMaxCount);
+ std::string line;
+ char tmp[128];
+ size_t first = 0;
+ while (first < table.size()) {
+ size_t last = std::min(table.size() - 1, first + 10 - 1);
+ winpty_snprintf(tmp, "%sfonts %02u-%02u:",
+ prefix, static_cast<unsigned>(first), static_cast<unsigned>(last));
+ line = tmp;
+ for (size_t i = first; i <= last; ++i) {
+ if (i % 10 == 5) {
+ line += " - ";
+ }
+ winpty_snprintf(tmp, " %2dx%-2d",
+ table[i].second.X, table[i].second.Y);
+ line += tmp;
+ }
+ trace("%s", line.c_str());
+ first = last + 1;
+ }
+ if (table.size() == kMaxCount) {
+ trace("%sfonts: ... stopped reading at %d fonts ...",
+ prefix, kMaxCount);
+ }
+}
+
+static std::string stringToCodePoints(const std::wstring &str) {
+ std::string ret = "(";
+ for (size_t i = 0; i < str.size(); ++i) {
+ char tmp[32];
+ winpty_snprintf(tmp, "%X", str[i]);
+ if (ret.size() > 1) {
+ ret.push_back(' ');
+ }
+ ret += tmp;
+ }
+ ret.push_back(')');
+ return ret;
+}
+
+static void dumpFontInfoEx(
+ const AGENT_CONSOLE_FONT_INFOEX &infoex,
+ const char *prefix) {
+ if (!isTracingEnabled()) {
+ return;
+ }
+ std::wstring faceName(infoex.FaceName,
+ winpty_wcsnlen(infoex.FaceName, COUNT_OF(infoex.FaceName)));
+ trace("%snFont=%u dwFontSize=(%d,%d) "
+ "FontFamily=0x%x FontWeight=%u FaceName=%s %s",
+ prefix,
+ static_cast<unsigned>(infoex.nFont),
+ infoex.dwFontSize.X, infoex.dwFontSize.Y,
+ infoex.FontFamily, infoex.FontWeight, utf8FromWide(faceName).c_str(),
+ stringToCodePoints(faceName).c_str());
+}
+
+static void dumpVistaFont(VistaFontAPI &api, HANDLE conout, const char *prefix) {
+ if (!isTracingEnabled()) {
+ return;
+ }
+ AGENT_CONSOLE_FONT_INFOEX infoex = {0};
+ infoex.cbSize = sizeof(infoex);
+ if (!api.GetCurrentConsoleFontEx()(conout, FALSE, &infoex)) {
+ trace("GetCurrentConsoleFontEx call failed");
+ return;
+ }
+ dumpFontInfoEx(infoex, prefix);
+}
+
+static void dumpXPFont(XPFontAPI &api, HANDLE conout, const char *prefix) {
+ if (!isTracingEnabled()) {
+ return;
+ }
+ AGENT_CONSOLE_FONT_INFO info = {0};
+ if (!api.GetCurrentConsoleFont()(conout, FALSE, &info)) {
+ trace("GetCurrentConsoleFont call failed");
+ return;
+ }
+ trace("%snFont=%u dwFontSize=(%d,%d)",
+ prefix,
+ static_cast<unsigned>(info.nFont),
+ info.dwFontSize.X, info.dwFontSize.Y);
+}
+
+static bool setFontVista(
+ VistaFontAPI &api,
+ HANDLE conout,
+ const Font &font) {
+ AGENT_CONSOLE_FONT_INFOEX infoex = {};
+ infoex.cbSize = sizeof(AGENT_CONSOLE_FONT_INFOEX);
+ infoex.dwFontSize.Y = font.size;
+ infoex.FontFamily = font.family;
+ infoex.FontWeight = 400;
+ winpty_wcsncpy_nul(infoex.FaceName, font.faceName);
+ dumpFontInfoEx(infoex, "setFontVista: setting font to: ");
+ if (!api.SetCurrentConsoleFontEx()(conout, FALSE, &infoex)) {
+ trace("setFontVista: SetCurrentConsoleFontEx call failed");
+ return false;
+ }
+ memset(&infoex, 0, sizeof(infoex));
+ infoex.cbSize = sizeof(infoex);
+ if (!api.GetCurrentConsoleFontEx()(conout, FALSE, &infoex)) {
+ trace("setFontVista: GetCurrentConsoleFontEx call failed");
+ return false;
+ }
+ if (wcsncmp(infoex.FaceName, font.faceName,
+ COUNT_OF(infoex.FaceName)) != 0) {
+ trace("setFontVista: face name was not set");
+ dumpFontInfoEx(infoex, "setFontVista: post-call font: ");
+ return false;
+ }
+ // We'd like to verify that the new font size is correct, but we can't
+ // predict what it will be, even though we just set it to `pxSize` through
+ // an apprently symmetric interface. For the Chinese and Korean fonts, the
+ // new `infoex.dwFontSize.Y` value can be slightly larger than the height
+ // we specified.
+ return true;
+}
+
+static Font selectSmallFont(int codePage, int columns, bool isNewW10) {
+ // Iterate over a set of font sizes according to the code page, and select
+ // one.
+
+ const wchar_t *faceName = nullptr;
+ unsigned int fontFamily = 0;
+ const FontSize *table = nullptr;
+ size_t tableSize = 0;
+
+ switch (codePage) {
+ case 932: // Japanese
+ faceName = kMSGothic;
+ fontFamily = 0x36;
+ if (isNewW10) {
+ table = k932GothicWin10;
+ tableSize = COUNT_OF(k932GothicWin10);
+ } else if (isAtLeastWindows8()) {
+ table = k932GothicWin8;
+ tableSize = COUNT_OF(k932GothicWin8);
+ } else {
+ table = k932GothicVista;
+ tableSize = COUNT_OF(k932GothicVista);
+ }
+ break;
+ case 936: // Chinese Simplified
+ faceName = kNSimSun;
+ fontFamily = 0x36;
+ table = k936SimSun;
+ tableSize = COUNT_OF(k936SimSun);
+ break;
+ case 949: // Korean
+ faceName = kGulimChe;
+ fontFamily = 0x36;
+ table = k949GulimChe;
+ tableSize = COUNT_OF(k949GulimChe);
+ break;
+ case 950: // Chinese Traditional
+ faceName = kMingLight;
+ fontFamily = 0x36;
+ table = k950MingLight;
+ tableSize = COUNT_OF(k950MingLight);
+ break;
+ default:
+ faceName = kLucidaConsole;
+ fontFamily = 0x36;
+ table = kLucidaFontSizes;
+ tableSize = COUNT_OF(kLucidaFontSizes);
+ break;
+ }
+
+ size_t bestIndex = static_cast<size_t>(-1);
+ std::tuple<int, int> bestScore = std::make_tuple(-1, -1);
+
+ // We might want to pick the smallest possible font, because we don't know
+ // how large the monitor is (and the monitor size can change). We might
+ // want to pick a larger font to accommodate console programs that resize
+ // the console on their own, like DOS edit.com, which tends to resize the
+ // console to 80 columns.
+
+ for (size_t i = 0; i < tableSize; ++i) {
+ const int width = table[i].width * columns;
+
+ // In general, we'd like to pick a font size where cutting the number
+ // of columns in half doesn't immediately violate the minimum width
+ // constraint. (e.g. To run DOS edit.com, a user might resize their
+ // terminal to ~100 columns so it's big enough to show the 80 columns
+ // post-resize.) To achieve this, give priority to fonts that allow
+ // this halving. We don't want to encourage *very* large fonts,
+ // though, so disable the effect as the number of columns scales from
+ // 80 to 40.
+ const int halfColumns = std::min(columns, std::max(40, columns / 2));
+ const int halfWidth = table[i].width * halfColumns;
+
+ std::tuple<int, int> thisScore = std::make_tuple(-1, -1);
+ if (width >= 160 && halfWidth >= 160) {
+ // Both sizes are good. Prefer the smaller fonts.
+ thisScore = std::make_tuple(2, -width);
+ } else if (width >= 160) {
+ // Prefer the smaller fonts.
+ thisScore = std::make_tuple(1, -width);
+ } else {
+ // Otherwise, prefer the largest font in our table.
+ thisScore = std::make_tuple(0, width);
+ }
+ if (thisScore > bestScore) {
+ bestIndex = i;
+ bestScore = thisScore;
+ }
+ }
+
+ ASSERT(bestIndex != static_cast<size_t>(-1));
+ return Font { faceName, fontFamily, table[bestIndex].size };
+}
+
+static void setSmallFontVista(VistaFontAPI &api, HANDLE conout,
+ int columns, bool isNewW10) {
+ int codePage = GetConsoleOutputCP();
+ const auto font = selectSmallFont(codePage, columns, isNewW10);
+ if (setFontVista(api, conout, font)) {
+ trace("setSmallFontVista: success");
+ return;
+ }
+ if (codePage == 932 || codePage == 936 ||
+ codePage == 949 || codePage == 950) {
+ trace("setSmallFontVista: falling back to default codepage font instead");
+ const auto fontFB = selectSmallFont(0, columns, isNewW10);
+ if (setFontVista(api, conout, fontFB)) {
+ trace("setSmallFontVista: fallback was successful");
+ return;
+ }
+ }
+ trace("setSmallFontVista: failure");
+}
+
+struct FontSizeComparator {
+ bool operator()(const std::pair<DWORD, COORD> &obj1,
+ const std::pair<DWORD, COORD> &obj2) const {
+ int score1 = obj1.second.X + obj1.second.Y;
+ int score2 = obj2.second.X + obj2.second.Y;
+ return score1 < score2;
+ }
+};
+
+static void setSmallFontXP(UndocumentedXPFontAPI &api, HANDLE conout) {
+ // Read the console font table and sort it from smallest to largest.
+ const DWORD fontCount = api.GetNumberOfConsoleFonts()();
+ trace("setSmallFontXP: number of console fonts: %u",
+ static_cast<unsigned>(fontCount));
+ std::vector<std::pair<DWORD, COORD> > table =
+ readFontTable(api, conout, fontCount);
+ std::sort(table.begin(), table.end(), FontSizeComparator());
+ for (size_t i = 0; i < table.size(); ++i) {
+ // Skip especially narrow fonts to permit narrower terminals.
+ if (table[i].second.X < 4) {
+ continue;
+ }
+ trace("setSmallFontXP: setting font to %u",
+ static_cast<unsigned>(table[i].first));
+ if (!api.SetConsoleFont()(conout, table[i].first)) {
+ trace("setSmallFontXP: SetConsoleFont call failed");
+ continue;
+ }
+ AGENT_CONSOLE_FONT_INFO info;
+ if (!api.GetCurrentConsoleFont()(conout, FALSE, &info)) {
+ trace("setSmallFontXP: GetCurrentConsoleFont call failed");
+ return;
+ }
+ if (info.nFont != table[i].first) {
+ trace("setSmallFontXP: font was not set");
+ dumpXPFont(api, conout, "setSmallFontXP: post-call font: ");
+ continue;
+ }
+ trace("setSmallFontXP: success");
+ return;
+ }
+ trace("setSmallFontXP: failure");
+}
+
+} // anonymous namespace
+
+// A Windows console window can never be larger than the desktop window. To
+// maximize the possible size of the console in rows*cols, try to configure
+// the console with a small font. Unfortunately, we cannot make the font *too*
+// small, because there is also a minimum window size in pixels.
+void setSmallFont(HANDLE conout, int columns, bool isNewW10) {
+ trace("setSmallFont: attempting to set a small font for %d columns "
+ "(CP=%u OutputCP=%u)",
+ columns,
+ static_cast<unsigned>(GetConsoleCP()),
+ static_cast<unsigned>(GetConsoleOutputCP()));
+ VistaFontAPI vista;
+ if (vista.valid()) {
+ dumpVistaFont(vista, conout, "previous font: ");
+ dumpFontTable(conout, "previous font table: ");
+ setSmallFontVista(vista, conout, columns, isNewW10);
+ dumpVistaFont(vista, conout, "new font: ");
+ dumpFontTable(conout, "new font table: ");
+ return;
+ }
+ UndocumentedXPFontAPI xp;
+ if (xp.valid()) {
+ dumpXPFont(xp, conout, "previous font: ");
+ dumpFontTable(conout, "previous font table: ");
+ setSmallFontXP(xp, conout);
+ dumpXPFont(xp, conout, "new font: ");
+ dumpFontTable(conout, "new font table: ");
+ return;
+ }
+ trace("setSmallFont: neither Vista nor XP APIs detected -- giving up");
+ dumpFontTable(conout, "font table: ");
+}
projects / VSoRC / .git / blobdiff