Aspose::Words::Rendering::NodeRendererBase::GetOpaqueBoundsInPixels method
Contents
[
Hide
]NodeRendererBase::GetOpaqueBoundsInPixels(float, float) method
Calculates the opaque bounds of the shape in pixels for a specified zoom factor and resolution.
System::Drawing::Rectangle Aspose::Words::Rendering::NodeRendererBase::GetOpaqueBoundsInPixels(float scale, float dpi)
| Parameter | Type | Description |
|---|---|---|
| scale | float | The zoom factor (1.0 is 100%). |
| dpi | float | The resolution to convert from points to pixels (dots per inch). |
ReturnValue
The opaque rectangle of the shape in pixels.
Remarks
This method converts OpaqueBoundsInPoints into rectangle in pixels and it is useful when you want to create a bitmap for rendering the shape with only opaque part of the shape.
Examples
Shows how to measure and scale shapes.
auto doc = MakeObject<Document>(MyDir + u"Office math.docx");
auto officeMath = System::ExplicitCast<OfficeMath>(doc->GetChild(NodeType::OfficeMath, 0, true));
auto renderer = MakeObject<OfficeMathRenderer>(officeMath);
// Verify the size of the image that the OfficeMath object will create when we render it.
ASSERT_NEAR(119.0f, renderer->get_SizeInPoints().get_Width(), 0.2f);
ASSERT_NEAR(13.0f, renderer->get_SizeInPoints().get_Height(), 0.1f);
ASSERT_NEAR(119.0f, renderer->get_BoundsInPoints().get_Width(), 0.2f);
ASSERT_NEAR(13.0f, renderer->get_BoundsInPoints().get_Height(), 0.1f);
// Shapes with transparent parts may contain different values in the "OpaqueBoundsInPoints" properties.
ASSERT_NEAR(119.0f, renderer->get_OpaqueBoundsInPoints().get_Width(), 0.2f);
ASSERT_NEAR(14.2f, renderer->get_OpaqueBoundsInPoints().get_Height(), 0.1f);
// Get the shape size in pixels, with linear scaling to a specific DPI.
System::Drawing::Rectangle bounds = renderer->GetBoundsInPixels(1.0f, 96.0f);
ASSERT_EQ(159, bounds.get_Width());
ASSERT_EQ(18, bounds.get_Height());
// Get the shape size in pixels, but with a different DPI for the horizontal and vertical dimensions.
bounds = renderer->GetBoundsInPixels(1.0f, 96.0f, 150.0f);
ASSERT_EQ(159, bounds.get_Width());
ASSERT_EQ(28, bounds.get_Height());
// The opaque bounds may vary here also.
bounds = renderer->GetOpaqueBoundsInPixels(1.0f, 96.0f);
ASSERT_EQ(159, bounds.get_Width());
ASSERT_EQ(18, bounds.get_Height());
bounds = renderer->GetOpaqueBoundsInPixels(1.0f, 96.0f, 150.0f);
ASSERT_EQ(159, bounds.get_Width());
ASSERT_EQ(30, bounds.get_Height());
See Also
- Class NodeRendererBase
- Namespace Aspose::Words::Rendering
- Library Aspose.Words for C++
NodeRendererBase::GetOpaqueBoundsInPixels(float, float, float) method
Calculates the opaque bounds of the shape in pixels for a specified zoom factor and resolution.
System::Drawing::Rectangle Aspose::Words::Rendering::NodeRendererBase::GetOpaqueBoundsInPixels(float scale, float horizontalDpi, float verticalDpi)
| Parameter | Type | Description |
|---|---|---|
| scale | float | The zoom factor (1.0 is 100%). |
| horizontalDpi | float | The horizontal resolution to convert from points to pixels (dots per inch). |
| verticalDpi | float | The vertical resolution to convert from points to pixels (dots per inch). |
ReturnValue
The opaque rectangle of the shape in pixels.
Remarks
This method converts OpaqueBoundsInPoints into rectangle in pixels and it is useful when you want to create a bitmap for rendering the shape with only opaque part of the shape.
Examples
Shows how to measure and scale shapes.
auto doc = MakeObject<Document>(MyDir + u"Office math.docx");
auto officeMath = System::ExplicitCast<OfficeMath>(doc->GetChild(NodeType::OfficeMath, 0, true));
auto renderer = MakeObject<OfficeMathRenderer>(officeMath);
// Verify the size of the image that the OfficeMath object will create when we render it.
ASSERT_NEAR(119.0f, renderer->get_SizeInPoints().get_Width(), 0.2f);
ASSERT_NEAR(13.0f, renderer->get_SizeInPoints().get_Height(), 0.1f);
ASSERT_NEAR(119.0f, renderer->get_BoundsInPoints().get_Width(), 0.2f);
ASSERT_NEAR(13.0f, renderer->get_BoundsInPoints().get_Height(), 0.1f);
// Shapes with transparent parts may contain different values in the "OpaqueBoundsInPoints" properties.
ASSERT_NEAR(119.0f, renderer->get_OpaqueBoundsInPoints().get_Width(), 0.2f);
ASSERT_NEAR(14.2f, renderer->get_OpaqueBoundsInPoints().get_Height(), 0.1f);
// Get the shape size in pixels, with linear scaling to a specific DPI.
System::Drawing::Rectangle bounds = renderer->GetBoundsInPixels(1.0f, 96.0f);
ASSERT_EQ(159, bounds.get_Width());
ASSERT_EQ(18, bounds.get_Height());
// Get the shape size in pixels, but with a different DPI for the horizontal and vertical dimensions.
bounds = renderer->GetBoundsInPixels(1.0f, 96.0f, 150.0f);
ASSERT_EQ(159, bounds.get_Width());
ASSERT_EQ(28, bounds.get_Height());
// The opaque bounds may vary here also.
bounds = renderer->GetOpaqueBoundsInPixels(1.0f, 96.0f);
ASSERT_EQ(159, bounds.get_Width());
ASSERT_EQ(18, bounds.get_Height());
bounds = renderer->GetOpaqueBoundsInPixels(1.0f, 96.0f, 150.0f);
ASSERT_EQ(159, bounds.get_Width());
ASSERT_EQ(30, bounds.get_Height());
See Also
- Class NodeRendererBase
- Namespace Aspose::Words::Rendering
- Library Aspose.Words for C++