fixed c01ff5b4 from https://gitee.com/shengu_lancer/graphic_ui/pulls/594

Description: fix font garbled on wearable device
IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I4T8JZ
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: Nlancer <haoshuo@huawei.com>

frameworks/font/glyphs_manager.cpp

@@ -100,7 +100,7 @@ GlyphNode* GlyphsManager::GetNodeFromCache(uint32_t unicode, uint8_t fontId)
     uint8_t uc = unicode & UNICODE_HASH_MASK;
     for (uint8_t i = 0; i < NODE_HASH_NR; i++) {
         GlyphNode* p = &((*nodeCache_)[font][uc][i]);
-        if ((p->unicode == unicode) && (p->reserve == fontId)) {
+        if ((p->unicode == unicode) && (p->fontId == fontId)) {
             node = p;
             break;
         }
@@ -335,7 +335,7 @@ const GlyphNode* GlyphsManager::GetGlyphNode(uint32_t unicode)
     }
     uint8_t fontId = fontId_;
     if (curGlyphNode_ != nullptr) {
-        if ((curGlyphNode_->unicode == unicode) && (curGlyphNode_->reserve == fontId)) {
+        if ((curGlyphNode_->unicode == unicode) && (curGlyphNode_->fontId == fontId)) {
             return curGlyphNode_;
         }
     }
@@ -343,7 +343,7 @@ const GlyphNode* GlyphsManager::GetGlyphNode(uint32_t unicode)
     if (node == nullptr) {
         node = GetNodeFromFile(unicode, fontId);
         if (node != nullptr) {
-            node->reserve = fontId;
+            node->fontId = fontId;
         }
     }
     curGlyphNode_ = node;
@@ -392,13 +392,8 @@ int8_t GlyphsManager::GetBitmap(uint32_t unicode, uint8_t* bitmap, uint8_t fontI
         GRAPHIC_LOGE("GlyphsManager::GetBitmap fontId not set");
         return INVALID_RET_VALUE;
     }
-    const GlyphNode* node = GetGlyphNode(unicode);
+    GlyphNode* node = const_cast<GlyphNode*>(GetGlyphNode(unicode));
     uint32_t tmpBitMapSectionStart = curBitMapSectionStart_;
-    while ((node != nullptr) && ((node->reserve != fontId) || (node->unicode != unicode))) {
-        SetCurrentFontId(fontId);
-        node = GetGlyphNode(unicode);
-        tmpBitMapSectionStart = curBitMapSectionStart_;
-    }
     guard.Unlock();
     if (node == nullptr) {
         GRAPHIC_LOGE("GlyphsManager::GetBitmap node not found");
@@ -418,6 +413,7 @@ int8_t GlyphsManager::GetBitmap(uint32_t unicode, uint8_t* bitmap, uint8_t fontI
         return INVALID_RET_VALUE;
     }
 
+    node->dataFlag = fontId;
     return RET_VALUE_OK;
 }
 } // namespace OHOS

frameworks/font/ui_font_bitmap.cpp

@@ -35,7 +35,7 @@ UIFontBitmap::UIFontBitmap() : offset_(0), dynamicFont_(), dynamicFontRamUsed_(0
     bitmapRamUsed_ = FONT_BITMAP_CACHE_SIZE;
 }
 
-UIFontBitmap:: ~UIFontBitmap()
+UIFontBitmap::~UIFontBitmap()
 {
     if (dynamicFontFd_ >= 0) {
         close(dynamicFontFd_);
@@ -277,22 +277,27 @@ uint8_t* UIFontBitmap::SearchInFont(uint32_t unicode, GlyphNode& glyphNode, uint
         SetCurrentFontId(fontId);
     }
     int8_t ret = GetGlyphNode(unicode, glyphNode);
-    while ((ret == RET_VALUE_OK) && ((glyphNode.reserve != fontId) || (glyphNode.unicode != unicode))) {
-        SetCurrentFontId(fontId);
-        ret = GetGlyphNode(unicode, glyphNode);
-    }
     if (ret != RET_VALUE_OK) {
         return nullptr;
     }
     uint8_t* bitmap = bitmapCache_->GetBitmap(fontId, unicode);
     if (bitmap != nullptr) {
+        GetGlyphNode(unicode, glyphNode);
+        const GlyphNode* node = nullptr;
+        node = dynamicFont_.GetGlyphNode(unicode);
+        if (node != nullptr && node->dataFlag == node->fontId && fontId == node->fontId) {
             return bitmap;
+        } else {
+            GRAPHIC_LOGE("DataFlag of bitmap node not equal to fontId.");
+        }
     }
     if (glyphNode.kernOff <= glyphNode.dataOff) {
         return nullptr;
     }
     uint32_t bitmapSize = glyphNode.kernOff - glyphNode.dataOff;
+    if (bitmap == nullptr) {
         bitmap = bitmapCache_->GetSpace(fontId, unicode, bitmapSize);
+    }
     ret = dynamicFont_.GetBitmap(unicode, bitmap, fontId);
     if (ret == RET_VALUE_OK) {
         return bitmap;
@@ -317,4 +322,4 @@ void UIFontBitmap::SetFontFileOffset(uint32_t offset)
 {
     offset_ = offset;
 }
-} // namespace
+} // namespace OHOS

interfaces/kits/font/ui_font_header.h

@@ -277,7 +277,8 @@ struct GlyphNode {
     uint32_t dataOff;  // GLYPH_DATA_OFF_OFFSET
     uint32_t kernOff;  // GLYPH_KERN_OFF_OFFSET
     uint16_t kernSize; // GLYPH_KERN_SIZE_OFFSET
-    uint16_t reserve;  // GLYPH_HEAD_RES_OFFSET
+    uint8_t fontId;    // GLYPH_FONT_ID
+    uint8_t dataFlag;  // GLYPH_DATA_HEAD_FLAG
 };
 
 /**