Merge pull request #3933 from BKNio:putText_3_0

modules/imgcodecs/test/test_drawing.cpp

@@ -448,3 +448,81 @@ protected:
 };
 
 TEST(Imgcodecs_Drawing, fillconvexpoly_clipping) { CV_FillConvexPolyTest test; test.safe_run(); }
+
+class CV_DrawingTest_UTF8 : public cvtest::BaseTest
+{
+public:
+    CV_DrawingTest_UTF8() {}
+    ~CV_DrawingTest_UTF8() {}
+protected:
+    void run(int)
+    {
+        vector<string> lines;
+        lines.push_back("abcdefghijklmnopqrstuvwxyz1234567890");
+        // cyrillic letters small
+        lines.push_back("\xD0\xB0\xD0\xB1\xD0\xB2\xD0\xB3\xD0\xB4\xD0\xB5\xD1\x91\xD0\xB6\xD0\xB7"
+                        "\xD0\xB8\xD0\xB9\xD0\xBA\xD0\xBB\xD0\xBC\xD0\xBD\xD0\xBE\xD0\xBF\xD1\x80"
+                        "\xD1\x81\xD1\x82\xD1\x83\xD1\x84\xD1\x85\xD1\x86\xD1\x87\xD1\x88\xD1\x89"
+                        "\xD1\x8A\xD1\x8B\xD1\x8C\xD1\x8D\xD1\x8E\xD1\x8F");
+        // cyrillic letters capital
+        lines.push_back("\xD0\x90\xD0\x91\xD0\x92\xD0\x93\xD0\x94\xD0\x95\xD0\x81\xD0\x96\xD0\x97"
+                        "\xD0\x98\xD0\x99\xD0\x9A\xD0\x9B\xD0\x9C\xD0\x9D\xD0\x9E\xD0\x9F\xD0\xA0"
+                        "\xD0\xA1\xD0\xA2\xD0\xA3\xD0\xA4\xD0\xA5\xD0\xA6\xD0\xA7\xD0\xA8\xD0\xA9"
+                        "\xD0\xAA\xD0\xAB\xD0\xAC\xD0\xAD\xD0\xAE\xD0\xAF");
+        // bounds
+        lines.push_back("-\xD0\x80-\xD0\x8E-\xD0\x8F-");
+        lines.push_back("-\xD1\x90-\xD1\x91-\xD1\xBF-");
+        // bad utf8
+        lines.push_back("-\x81-\x82-\x83-");
+        lines.push_back("--\xF0--");
+        lines.push_back("-\xF0");
+
+        vector<int> fonts;
+        fonts.push_back(FONT_HERSHEY_SIMPLEX);
+        fonts.push_back(FONT_HERSHEY_PLAIN);
+        fonts.push_back(FONT_HERSHEY_DUPLEX);
+        fonts.push_back(FONT_HERSHEY_COMPLEX);
+        fonts.push_back(FONT_HERSHEY_TRIPLEX);
+        fonts.push_back(FONT_HERSHEY_COMPLEX_SMALL);
+        fonts.push_back(FONT_HERSHEY_SCRIPT_SIMPLEX);
+        fonts.push_back(FONT_HERSHEY_SCRIPT_COMPLEX);
+
+        vector<Mat> results;
+        Size bigSize(0, 0);
+        for (vector<int>::const_iterator font = fonts.begin(); font != fonts.end(); ++font)
+        {
+            for (int italic = 0; italic <= FONT_ITALIC; italic += FONT_ITALIC)
+            {
+                for (vector<string>::const_iterator line = lines.begin(); line != lines.end(); ++line)
+                {
+                    const float fontScale = 1;
+                    const int thickness = 1;
+                    const Scalar color(20,20,20);
+                    int baseline = 0;
+
+                    Size textSize = getTextSize(*line, *font | italic, fontScale, thickness, &baseline);
+                    Point textOrg(0, textSize.height + 2);
+                    Mat img(textSize + Size(0, baseline), CV_8UC3, Scalar(255, 255, 255));
+                    putText(img, *line, textOrg, *font | italic, fontScale, color, thickness, CV_AA);
+
+                    results.push_back(img);
+                    bigSize.width = max(bigSize.width, img.size().width);
+                    bigSize.height += img.size().height + 1;
+                }
+            }
+        }
+
+        int shift = 0;
+        Mat result(bigSize, CV_8UC3, Scalar(100, 100, 100));
+        for (vector<Mat>::const_iterator img = results.begin(); img != results.end(); ++img)
+        {
+            Rect roi(Point(0, shift), img->size());
+            Mat sub(result, roi);
+            img->copyTo(sub);
+            shift += img->size().height + 1;
+        }
+        imwrite("/tmp/all_fonts.png", result);
+    }
+};
+
+TEST(Highgui_Drawing, utf8_support) { CV_DrawingTest_UTF8 test; test.safe_run(); }

modules/imgproc/src/drawing.cpp

@@ -1941,7 +1941,11 @@ static const int HersheyComplex[] = {
 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026, 2223, 2084,
 2224, 2247, 587, 2249, 2101, 2102, 2103, 2104, 2105, 2106, 2107, 2108, 2109, 2110, 2111,
 2112, 2113, 2114, 2115, 2116, 2117, 2118, 2119, 2120, 2121, 2122, 2123, 2124, 2125, 2126,
-2225, 2229, 2226, 2246 };
+2225, 2229, 2226, 2246, 2801, 2802, 2803, 2804, 2805, 2806, 2807, 2808, 2809, 2810, 2811,
+2812, 2813, 2814, 2815, 2816, 2817, 2818, 2819, 2820, 2821, 2822, 2823, 2824, 2825, 2826,
+2827, 2828, 2829, 2830, 2831, 2832, 2901, 2902, 2903, 2904, 2905, 2906, 2907, 2908, 2909,
+2910, 2911, 2912, 2913, 2914, 2915, 2916, 2917, 2918, 2919, 2920, 2921, 2922, 2923, 2924,
+2925, 2926, 2927, 2928, 2929, 2930, 2931, 2932};
 
 static const int HersheyComplexItalic[] = {
 (9 + 12*16) + FONT_ITALIC_ALPHA + FONT_ITALIC_DIGIT + FONT_ITALIC_PUNCT +
@@ -2033,6 +2037,50 @@ static const int* getFontData(int fontFace)
     return ascii;
 }
 
+inline void readCheck(int &c, int &i, const String &text, int fontFace)
+{
+
+    int leftBoundary = ' ', rightBoundary = 127;
+
+    if(c >= 0x80 && fontFace == FONT_HERSHEY_COMPLEX)
+    {
+        if(c == 0xD0 && (uchar)text[i + 1] >= 0x90 && (uchar)text[i + 1] <= 0xBF)
+        {
+            c = (uchar)text[++i] - 17;
+            leftBoundary = 127;
+            rightBoundary = 175;
+        }
+        else if(c == 0xD1 && (uchar)text[i + 1] >= 0x80 && (uchar)text[i + 1] <= 0x8F)
+        {
+            c = (uchar)text[++i] + 47;
+            leftBoundary = 175;
+            rightBoundary = 191;
+        }
+        else
+        {
+            if(c >= 0xC0 && text[i+1] != 0) //2 bytes utf
+                i++;
+
+            if(c >= 0xE0 && text[i+1] != 0) //3 bytes utf
+                i++;
+
+            if(c >= 0xF0 && text[i+1] != 0) //4 bytes utf
+                i++;
+
+            if(c >= 0xF8 && text[i+1] != 0) //5 bytes utf
+                i++;
+
+            if(c >= 0xFC && text[i+1] != 0) //6 bytes utf
+                i++;
+
+            c = '?';
+        }
+    }
+
+    if(c >= rightBoundary || c < leftBoundary)
+        c = '?';
+}
+
 extern const char* g_HersheyGlyphs[];
 
 void putText( InputOutputArray _img, const String& text, Point org,
@@ -2066,8 +2114,7 @@ void putText( InputOutputArray _img, const String& text, Point org,
         int c = (uchar)text[i];
         Point p;
 
-        if( c >= 127 || c < ' ' )
+        readCheck(c, i, text, fontFace);
-            c = '?';
 
         const char* ptr = faces[ascii[(c-' ')+1]];
         p.x = (uchar)ptr[0] - 'R';
@@ -2114,8 +2161,7 @@ Size getTextSize( const String& text, int fontFace, double fontScale, int thickn
         int c = (uchar)text[i];
         Point p;
 
-        if( c >= 127 || c < ' ' )
+        readCheck(c, i, text, fontFace);
-            c = '?';
 
         const char* ptr = faces[ascii[(c-' ')+1]];
         p.x = (uchar)ptr[0] - 'R';