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Delphi GUI Programming with FireMonkey

You're reading from   Delphi GUI Programming with FireMonkey Unleash the full potential of the FMX framework to build exciting cross-platform apps with Embarcadero Delphi

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Product type Paperback
Published in Oct 2020
Publisher Packt
ISBN-13 9781788624176
Length 546 pages
Edition 1st Edition
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Author (1):
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Andrea Magni Andrea Magni
Author Profile Icon Andrea Magni
Andrea Magni
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Table of Contents (18) Chapters Close

Preface 1. Section 1: Delphi GUI Programming Frameworks
2. Introducing the FireMonkey Framework FREE CHAPTER 3. Exploring Similarities and Differences with VCL 4. Section 2: The FMX Framework in Depth
5. Mastering Basic Components 6. Discovering Lists and Advanced Components 7. Using FireDAC in FMX Applications 8. Implementing Data Binding 9. Understanding FMX Style Concept 10. Divide and Conquer with TFrameStand 11. Building Responsive UIs 12. Orchestrating Transitions and Animations 13. Section 3: Pushing to The Top: Advanced Topics
14. Building Responsive Applications 15. Exploring Cross-Platform Services 16. Learning about FMX 3D Capabilities 17. Other Books You May Enjoy

TBitmapAnimation

We discussed color animations in the TColorAnimation and TColorKeyAnimation sections earlier. Bitmaps, in their very raw form, are large arrays of color values (one per point of the bitmap) and can potentially include alpha channel information.

At this point, you may be thinking that bitmap animation takes place by animating every single pixel color from the initial value to the corresponding one in the final bitmap. But this is not what happens.

Here, FMX takes advantage of its built-in graphics capabilities and adopts a more efficient strategy. Each step of the animation from a source image toward a target image will consist of the drawing of the source image, along with a certain opacity (alpha) value, immediately followed by a drawing of the target image, along with a complementary opacity.

The following image exemplifies this process:

Figure 10.26

As you can see, NormalizedTime is labeled on top of each step (ranging from 0 to 1); that is, the...

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