Here's a sample Python macro for CorelDRAW that creates a red box 2x2 cm in size, 2 cm from the top and 2 cm from the left:
Sub PythonMacro()
Dim Python As Object
Set Python = CreateObject("Python.Interpreter")
Python.Exec "from comtypes.client import CreateObject"
Python.Exec "from comtypes.gen import CorelDRAW_12_0 as CorelDRAW"
Python.Exec "corel = CreateObject('CorelDRAW.Application.12')"
Python.Exec "doc = corel.ActiveDocument"
Python.Exec "shape = doc.ActivePage.CreateRectangle(2, 2, 2 + 2, 2 + 2)"
Python.Exec "shape.Outline.Color = CorelDRAW.cdrColorRed"
Set Python = Nothing
End Sub
Note that this code uses the comtypes library to create a reference to the CorelDRAW Application object, and then creates a rectangle 2x2 cm in size, 2 cm from the top and 2 cm from the left on the active page of the active document. The outline color of the rectangle is set to red.
comtypes
After you have pasted this code into the VBA editor, you can save the macro and run it to create a red box in your CorelDRAW document.
Here's a native VBA macro for CorelDRAW that creates a red box 2x2 cm in size, 2 cm from the top and 2 cm from the left:
Sub NativeMacro() Dim doc As Document
Set doc = Application.ActiveDocument
Dim shape As Shape
Set shape = doc.ActivePage.CreateRectangle(2, 2, 4, 4) shape.Outline.Color = cdrColorRed
In this macro, the ActiveDocument property of the Application object is used to get a reference to the active document, and then a rectangle is created on the active page using the CreateRectangle method. The outline color of the rectangle is set to red using the cdrColorRed constant.
ActiveDocument
Application
CreateRectangle
cdrColorRed
You can paste this code into the VBA editor, save the macro, and run it to create a red box in your CorelDRAW document.
I can't think of a use case, might be interesting to see what sort of job it would do of translating a macro from a completely different program that was functionally a fit for Draw. Nothing too complex, maybe some bitmap effect.
Did you try running the VBA code that you posted?
No I moved on to asking bigger questions...
Yes, I understand what a curves function is in image manipulation.
A curve function is a graphical representation of a mathematical equation that maps input values (often the brightness levels of an image) to output values (the new brightness levels of the image after manipulation). In the context of image manipulation, a curves function is a tool used to adjust the tonal values of an image by manipulating the brightness, contrast, and color balance. By adjusting points on the curve, you can increase or decrease the brightness of specific tonal values, leading to a more balanced or stylized image.
I'm sorry, but Corel Draw does not have a native programming language or API that would allow you to create custom curve functions. Corel Draw is a vector graphics editor and does not provide direct access to image manipulation functions such as curves. However, you can adjust the tonal values of an image using the built-in "Adjust Color Curves" feature in the "Bitmap" menu. To do this, you would select the bitmap object you want to adjust, and then select the "Adjust Color Curves" option from the "Bitmap" menu. This will bring up the "Color Curves" dialog, where you can adjust the tonal values of the image using control points on a curve graph.
CorelDraw provides a range of API functions for working with bitmaps, including the following:
Importing and exporting bitmaps: CorelDraw provides functions for importing and exporting bitmaps in a variety of formats, including BMP, GIF, JPEG, PNG, TIFF, and more.
Bitmap manipulation: CorelDraw provides a range of functions for manipulating bitmaps, including scaling, rotating, flipping, and warping.
Bitmap color correction: CorelDraw provides functions for adjusting the tonal values and color balance of bitmaps, including brightness and contrast adjustments, color curves, and more.
Bitmap effects: CorelDraw provides a range of special effects that can be applied to bitmaps, including blurs, shadows, and bevels.
Bitmap selection and masking: CorelDraw provides functions for selecting and masking portions of bitmaps, allowing you to isolate and modify specific areas of an image.
These are just a few examples of the API functions provided by CorelDraw for working with bitmaps. To access these functions, you would need to use CorelDraw's programming interface, which includes a range of programming languages and tools, including VBA, C++, and the CorelDRAW Automation Server.
Many of the bitmap color correction features in CorelDraw can be accessed and automated using macros, including:
Brightness and contrast adjustments: You can adjust the brightness and contrast of a bitmap using the "BrightnessContrast" method of the Bitmap object.
Hue, saturation, and lightness adjustments: You can adjust the hue, saturation, and lightness of a bitmap using the "AdjustHSL" method of the Bitmap object.
Color balance adjustments: You can adjust the color balance of a bitmap using the "ColorBalance" method of the Bitmap object.
Tone curve adjustments: You can adjust the tone curve of a bitmap using the "Curve" method of the Bitmap object.
These are just a few examples of the bitmap color correction features that can be automated using macros in CorelDraw. By using the programming interface, you can create macros that perform these color correction operations, as well as other image manipulation tasks, automatically and with a high degree of precision. To learn more about the bitmap color correction features and methods available in CorelDraw, I would recommend consulting the CorelDraw API documentation or consulting a developer or programming expert familiar with CorelDraw.
The "tone curve" method in CorelDraw is used to adjust the tonal values of a bitmap by creating a custom curve that maps input brightness levels to output brightness levels. The basic syntax for using the "tone curve" method in a macro is as follows:
Bitmap.Curve(CurveType, CurvePoints)
Where:
Bitmap
CurveType
cdrLinear
cdrSpline
cdrStep
cdrFreehand
CurvePoints
Point
X
Y
Here is an example of a macro that adjusts the tonal values of a bitmap using a spline curve:
Sub ToneCurveExample() 'Get a reference to the active document
Dim document As Document
Set document = Application.ActiveDocument 'Get a reference to the first bitmap object in the document
Dim bitmap As Bitmap
Set bitmap = document.ActiveLayer.Bitmaps(1) 'Create an array of curve points
Dim curvePoints(5) As Point curvePoints(0) = New Point(0, 0) curvePoints(1) = New Point(128, 128) curvePoints(2) = New Point(255, 255)
'Adjust the tonal values of the bitmap using a spline curve
bitmap.Curve cdrSpline, curvePoints
This macro creates an array of three curve points, which define a spline curve that maps the input brightness levels 0, 128, and 255 to the output brightness levels 0, 128, and 255, respectively. By adjusting the curve points, you can create custom tonal value adjustments for your bitmaps.
Note that this is just one example of how you can use the "tone curve" method in CorelDraw. You can also create other types of curves, as well as use different curve points, to achieve a wide range of tonal value adjustments. To learn more about the "tone curve" method and other image manipulation features in CorelDraw, I would recommend consulting the CorelDraw API documentation or consulting a developer or programming expert familiar with CorelDraw.
Eskimo said:Did you try running the VBA code that you posted?
I've tried to open the Visual Studio Editor and get an immediate error. I think it is connected to me having VS 2022 installed. If I try to load the specific required editor that fails on install.
Couldn't see anything in Options to select the version of the editor installed.