文件的断言
IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I6R7U5
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: Nchenjiafeng <chenjiafeng10@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I6CYAP
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nlancer <haoshuo@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I68XUH
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nlizhiqi <lizhiqi1@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I5WD6I
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: youbing54<youbing3@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I5W2LG
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: youbing54<youbing3@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I5VLPZ
Feature or Bugfix: Bugfix
Binary Source: No
Signed-off-by: Nsuwenxiang <suwenxiang@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I5UCNU
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: youbing54<youbing3@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I58ZFB
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nlancer <haoshuo@huawei.com>

issuesno:https://gitee.com/openharmony/graphic_ui/issues/I5OVWQ
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nshiqichang <shiqichang@huawei.com>
Change-Id: I9bc24411ec84048604894192911d0af852524e03

Change-Id: I70c4f7a1cf540187b94380182769be2701e31bbc

issuesno:https://gitee.com/openharmony/graphic_ui/issues/I5NVFQ
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nshiqichang <shiqichang@huawei.com>
Change-Id: I863dd70dbb5415017c85b67d8654fbce36353eca

Change-Id: Ibdc6b274f21c7e2a92bbed2118834fc1a34d4e09

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I5AD8G
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nlizhiqi <lizhiqi1@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I58ZEX?from=project-issue
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nlancer <haoshuo@huawei.com>

issuesno:https://gitee.com/openharmony/graphic_ui/issues/I5MPWR
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nshiqichang <shiqichang@huawei.com>
Change-Id: Id5c0c6a9ed9c403bd2ebebf3fc926d9a4529b5ea

Change-Id: I915a736917aa372f98c15dc2c10e049da740e228

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I5N55G
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nlizhiqi <lizhiqi1@huawei.com>

IssueNo:
Feature or Bugfix: Feature
Binary Source:No
Signed-off-by: Nlizhiqi <lizhiqi1@huawei.com>

Signed-off-by: Nzhumingxian <zhumingxian@ohos.com.cn>

渐变、pattern，Linedash、混合
Signed-off-by: Nxucheng57 <xucheng57@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I5001O
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: Nbenb365 <liuyongchang1@huawei.com>

Signed-off-by: Nliuyuxiang-bear <liuyuxiang7@huawei.com>
Change-Id: Ice311de57f051d7ecc934c684743bd7aced9284f

Signed-off-by: Nliuyuxiang-bear <liuyuxiang7@huawei.com>

相关的Issue

原因（目的、解决的问题等）
更新图形系统中UICanva画布API功能
RM008 对标H5，支持实现如下属性及接口
RM009 线条样式属性及矩形方法
RM011 在画布上绘制文本（无填充）以及向画布上绘制图像
RM012 支持alpha和合成模式属性
RM013 渐变填充方法的实现

描述（做了什么，变更了什么）
更新图形系统中UICanva画布API功能
RM008 对标H5，支持实现如下属性及接口
RM009 线条样式属性及矩形方法
RM011 在画布上绘制文本（无填充）以及向画布上绘制图像
RM012 支持alpha和合成模式属性
RM013 渐变填充方法的实现

测试用例（新增、改动、可能影响的功能）
foundation/graphic/ui/test/unittest/components/ui_canvas_unit_test.cpp
Signed-off-by: Nxucheng57 <xucheng57@huawei.com>

IssueNo:https://gitee.com/openharmony/graphic_ui/issues/I4KNA1
IssueNo:https://gitee.com/openharmony/graphic_ui/issues/I4KN89
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: Nlancer <haoshuo@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I4LTZG
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: Nlancer <haoshuo@huawei.com>

Change-Id: I14193f78f345c4ab682f376943f1d1e3183266f2
Signed-off-by: Nliqiang <liqiang121@huawei.com>

IssueNo: https://gitee.com/openharmony/graphic_ui/issues/I43WS7
Feature or Bugfix: Bugfix
Binary Source:No
Signed-off-by: NYueBiang <suyue7@huawei.com>

    Description:add TDD test
    Sig:graphic
    Feature or Bugfix:Bugfix
    Binary Source:No
Signed-off-by: Ndengzhihao <dengzhihao7@huawei.com>

Change-Id: Icac68281c032bcd10ee90042e041ff2c5de28ccb

Description:add test cases
Sig:graphic
Feature or Bugfix:Bugfix
Binary Source:No
Signed-off-by: Nwangtiantian <wangtiantian19@huawei.com>

Description:add test cases
Sig:graphic
Feature or Bugfix:Bugfix
Binary Source:No
Signed-off-by: Nwangtiantian <wangtiantian19@huawei.com>

Signed-off-by: NYueBiang <suyue7@huawei.com>

Signed-off-by: NYueBiang <suyue7@huawei.com>

Signed-off-by: NYueBiang <suyue7@huawei.com>

Signed-off-by: NYueBiang <suyue7@huawei.com>

Sig:graphic
Feature or Bugfix:Feature
Binary Source:No
Signed-off-by: Nguyuanzhang <zhangguyuan@huawei.com>

Sig:graphic
Feature or Bugfix:Feature
Binary Source:No
Signed-off-by: Nguyuanzhang <zhangguyuan@huawei.com>

Signed-off-by: NYueBiang <suyue7@huawei.com>

Sig:graphic
Feature or Bugfix:Feature
Binary Source:No

Change-Id: Ie053bc8433a5ea1f3cc4cf2b53f63e826f21e86b

Description: fix slider unittest
Feature or Bugfix: Bugfix
Binary Source: NO

Sig:graphic
Feature or Bugfix:Bugfix
Binary Source:No

Change-Id: Ie71c71284a816fcde454c222a6d5afb8d1a222e3

Change-Id: I110a586a91b79f439c568b29aa628a583bb9832d