TWI475472B - System for drawing on touch screen and method thereof - Google Patents

Description

System and method for providing drawing operation in touch screen

A drawing system and method thereof, in particular, a system and method for providing a drawing operation in a touch screen.

With the development of touch screens, most mobile devices, such as personal digital assistants (PDAs), mobile phones, and tablets, have been equipped with touch screens to provide user input, so that users can touch The control screen selects objects such as buttons, icons, etc. displayed on the touch screen, performs handwriting input, and can even draw directly on the touch screen.

At present, in some operating systems of mobile devices, drawing elements such as "InkPresenter" can be used. Therefore, it is very easy to develop a drawing function in a word processing program of an operating system of these mobile devices, but In the operating system of some mobile devices, no drawing components are provided, that is, if the drawing function is to be developed in the word processing program of the operating system of the mobile device, the developer needs to implement the drawing component by himself. .

Since the drawing elements are not provided in the operating system of some mobile devices, the developer must modify the touch event processing function of the components provided by these operating systems, thereby realizing the drawing components, and thus, the modified components have The drawing function, but it loses the original touch operation function, in addition to not easily letting the developer inherit the use, it may also cause the user to operate.

In summary, it can be seen that the drawing elements that have been self-made in the prior art often do not contain the original touch operation function, so it is necessary to propose an improved technical means to solve this problem.

In view of the problem that the prior art drawing elements do not include the original touch operation function, the present invention discloses a system and method for providing a drawing operation in a touch screen, wherein:

The system for providing a drawing operation in a touch screen is applied to a word processing program, and the word processing program is executed on a mobile device operating system, and the system includes at least: a touch event dispatching module for Receiving a plurality of touch events input on the editing interface of the word processing program; the touch event intercepting module is configured to: when the touch event received by the touch event dispatching module is a departure behavior (ACTION_UP) event The interception behavior event is intercepted and used to intercept the contact behavior event and intercept the touch event received by the touch event dispatching module before the interval is equal to the predetermined interval value. The touch event is received until the interval time meets the predetermined interval value; the touch event processing module is configured to update the touch event when the touch event received by the touch event dispatching module is a leaving event event (touch) the area, and calculate the interval time, and when the interval time meets the predetermined interval value, the touch track is generated according to the intercepted touch event, and According to touch track drawing operations.

The method for providing a drawing operation in a touch screen disclosed in the present invention is applied to a word processing program, and the word processing program is executed on the operating system of the mobile device, and the steps include at least: receiving the editing interface on the word processing program Input touch event; determine that the received touch event is a departure behavior event, update the touch area, calculate the interval time, and intercept the leaving behavior event; determine the received touch before the interval time does not meet the predetermined interval value When the control event is a contact behavior event, the contact behavior event is intercepted, and the subsequent touch event is intercepted until the interval time The touch interval is generated according to the intercepted touch event; the drawing operation is performed according to the touch track.

The system and method disclosed in the present invention are as above, and the difference between the prior art and the prior art is that the present invention performs the original touch function before receiving the touch event as the exit behavior event, when the received touch event is When the behavior event is left, the interval time is calculated, and then, before the interval time does not meet the predetermined interval value, when the received touch event is a contact behavior event, the received touch event is intercepted until the interval time meets the predetermined interval value. When the interval time meets the predetermined interval value, the touch track is generated according to the intercepted touch event, and the drawing operation is performed according to the touch track, thereby solving the problems existing in the prior art, and the components that can be improved can be achieved. Inherit the practical technical effects of using.

The features and embodiments of the present invention will be described in detail below with reference to the drawings and embodiments, which are sufficient to enable those skilled in the art to fully understand the technical means to which the present invention solves the technical problems, and The achievable effects of the present invention.

The present invention is applied to a word processing program executed on a mobile phone operating system, which allows a word processing program to generate a touch track according to a touch event while retaining the original touch operation in the text editing interface. Perform drawing operations based on the touch track to increase the drawing function.

The touch event proposed by the present invention is a series of events generated after the user touches the touch screen of the mobile phone during the touch operation on the editing interface of the text processing program, and sequentially touches the touch screen. The resulting contact behavior (ACTION_DOWN) event, the movement behavior that occurs when sliding on the touch screen (ACTION_MOVE) event, and the departure behavior (ACTION_UP) event that occurs when the touch screen is removed.

It is particularly worth mentioning that during the drawing operation, the touch event generated in a short time includes at least one contact behavior event and one mobile behavior event. When the drawing operation is not performed, there is usually only one contact behavior event and one movement behavior. Events, in addition, during the drawing operation, usually move greatly in the touch area, so the range of the touch track generated by the mobile behavior event is usually smaller than the range of the touch track generated by the non-drawing operation. Therefore, in the present invention, the time and the range of the touch track are determined to determine whether the touch operation of the user is the original touch operation or the drawing operation.

The system operation of the present invention will be described below with reference to the system architecture diagram of the present invention for providing a drawing operation in a touch screen. As shown in "FIG. 1", the system of the present invention includes a sub-class 100 and an upper element 200.

The subcategory 100 inherits from the parent category and, after execution of the word processing program, can receive and process touch events and, in some cases, provide the received touch events to the parent category for processing. Among them, the parent category is the original component that was modified.

The subcategory 100 further includes a touch event dispatch module 110, a touch event interception module (onInterceptTouchEvent) module 120, and a touch event processing (onTouchEvent) module 130. The touch event dispatching module 110 and the touch event intercepting module 120 are the same as the parent category, and the touch event processing module 130 is overridden.

The touch event dispatch module 110 is responsible for receiving touch events transmitted by the layer element 200 embedded in the sub-category 100. The embedded component sub-class 100 upper layer component 200 may be a "View" object, or may be a user interface program of a word processing program. (User Interface Program), for example, "Activity" object, but the present invention is not particularly limited.

The touch event dispatching module 110 is also responsible for determining the object that provides the received touch event, that is, determining that the received touch event is to be provided to the touch event intercepting module 120 and the touch event processing module 130. Or the upper element 200.

The touch event dispatching module 110 will receive the touch event before the received touch event is an exit behavior event, that is, when the received touch event is a contact behavior event or a mobile behavior event. Provided to the touch event processing module 130, and when the received touch event is a leaving behavior event, the received leaving behavior event is provided to the touch event intercepting module 120, and the touch event dispatching module 110 When the contact behavior event is received again, the interval event calculated by the touch event processing module 130 is determined to meet the predetermined interval value. If the interval time does not meet the predetermined interval value, that is, the interval is Before the time meets the predetermined interval value, the received contact behavior event is provided to the touch event intercepting module 120 until the interval time meets the predetermined interval value. When the interval time meets the predetermined interval value, the touch event dispatching module 110 The received touch event is provided to the touch event processing module 130.

The touch event intercepting module 120 is responsible for intercepting the touch event provided by the touch event dispatching module 110, so that the touch event is no longer transmitted to the lower layer component 200 or the lower layer component (not shown) embedded in the subcategory 100.

The touch event processing module 130 is responsible for processing the touch events provided by the touch event dispatching module 110.

Before the touch event provided by the touch event dispatching module 110 is the exit behavior event, the touch event processing module 130 updates the touch when receiving the touch event. The (touch) area reflects the touch operation in real time, thereby calculating the coverage of the touch track on the touch area, and calling the touch event processing method of the parent category, so that the touch event processing method of the parent category is based on the touch The touch event received by the event processing module 130 performs the function of the original touch operation.

When the touch event provided by the touch event dispatching module 110 is an exit behavior event, the touch event processing module 130 updates the touch area and starts calculating the interval time until the calculated interval time meets the predetermined interval value. The touch track is generated according to a touch event such as a motion behavior (ACTION_MOVE) event intercepted by the touch event interception module 120, and a drawing operation is performed according to the generated touch track, thereby providing a drawing function.

After the touch event dispatching module 110 receives the leaving behavior event (the touch event sent by the touch event dispatching module 110 to the touch event processing module 130 is a leaving behavior event), the touch event processing module 130 is received. If the calculated interval time meets the predetermined interval value, if the touch event dispatching module 110 no longer receives the touch event, the touch event processing module 130 can determine that the generated touch track is on the touch area. The touch event processing module 130 can perform a drawing operation, and if not, the touch event processing module 130 can call the touch of the parent category. The event processing method is provided, and the touch event intercepted by the touch event intercepting module 120 is provided to the touch event processing method of the parent category, so that the touch event processing method of the parent category is intercepted according to the touch event intercepting module 120. The touch event performs the function of the original touch operation.

In addition, when the touch event dispatching module 110 receives the contact behavior event again after receiving the leaving behavior event, the touch event processing module 130 starts to calculate. When the touch event dispatching module 110 receives the leaving behavior event again, the touch event processing module 130 determines that the calculated pressing time does not meet the predetermined pressing value, and cancels the calculating pressing time, and when the touch event occurs When the processing module 130 determines that the calculated pressing time meets the predetermined pressing value, it indicates that the pressing event processing module 130 performs a function corresponding to the long pressing operation.

As can be seen from the above, the touch event processing module 130 can determine whether the drawing operation is based on the operation time of the touch operation and the coverage of the touch track on the touch area. If the drawing operation is performed, the touch event processing module can If the touch operation is not a drawing operation, the touch event processing module 130 can transmit the touch event to the touch event processing module of the parent category, so that the touch event processing module of the parent category performs The original positioning operation and long press operation in the text editing interface, so that the drawing operation can be realized without affecting the original function of the text editing interface.

Next, an operational system and method of the present invention will be described with reference to an embodiment. Referring to FIG. 2A, a flowchart of a method for providing a drawing operation in a touch screen according to the present invention is provided. In this embodiment, it is assumed that the touch operation performed by the user in the text editing interface displayed on the touch screen of the mobile phone is a drawing operation.

After the word processing program executed in the mobile phone operating system executes the sub-category 100 of the present invention, the touch event dispatching module 110, the touch event intercepting module 120, and the touch event processing module 130 are generated in the word processing program. .

After the touch event dispatch module 110 is generated, the touch event can be continuously received. Each time the user touches the touch screen of the mobile phone, the contact behavior event, the mobile behavior event (if the user has a slide), and the leaving behavior event are sequentially generated, so the touch event dispatching module 110 receives the Contact behavior events, mobile behavior events (if the user has a slide), and departure behavior events.

After the touch event dispatching module 110 receives the touch event, it may first determine whether the received touch event is a leaving behavior event (step 310). If the touch event dispatching module 110 receives the touch event and the mobile event event, the touch event dispatching module 110 can provide the received touch event to the touch event processing module 130. The touch event processing module 130 can update the touch area according to the process shown in FIG. 2B (step 341), and call the touch event processing method of the parent category to provide the received touch event to the touch event. The touch event processing method of the parent category is processed (step 345). Thus, the touch event processing method of the parent category can perform the function of the original touch operation according to the touch event received by the touch event processing module 130.

Continuing back to FIG. 2A, after the touch event received by the touch event dispatching module 110 is a leaving event, the touch event dispatching module 110 can provide the received touch event to the touch event. The intercepting module 120, the touch event intercepting module 120 can intercept the leaving behavior event (step 336), and provide the intercepted leaving behavior event to the touch event processing module 130, and the touch event processing module 130 can update the touch The area is controlled (step 320) and the interval is calculated (step 332).

After that, the touch event dispatching module 110 can continuously determine whether the interval time calculated by the touch event processing module 130 meets the interval predetermined value (step 352), and continuously determines whether the contact behavior event is received again (step 356). ).

If the touch event dispatching module 110 receives the contact behavior event again, the interval calculated by the touch event processing module 130 does not meet the predetermined interval value, that is, calculated by the touch event processing module 130. Before the interval time meets the predetermined interval value, the touch event dispatching module 110 receives the contact behavior event again, indicating that the user performs the drawing operation. Therefore, the touch event dispatching module 110 can connect the touch event. The received contact behavior event is provided to the touch event interception module 120, and the touch event interception module 120 can intercept the received contact behavior event (step 361).

In fact, after the touch event dispatching module 110 provides the received contact behavior event to the touch event intercepting module 120, it can continuously determine whether the interval time calculated by the touch event processing module 130 meets the predetermined interval value. (Step 365), if not, the touch event dispatching module 110 can continuously provide the received contact behavior event to the touch event intercepting module 120, so that the touch event intercepting module 120 can continuously intercept the The touch event is received (step 361) until the touch event dispatching module 110 determines that the interval time calculated by the touch event processing module 130 meets the predetermined interval value.

The touch event processing module 130 may generate a touch according to a touch event intercepted by the touch event interception module 120 before the interval time meets the predetermined interval value, such as a mobile behavior event, when the calculated interval time meets the predetermined interval value. The trajectory is controlled (step 372) and a drawing operation is performed in accordance with the generated touch trajectory (step 376).

If the interval time calculated by the touch event processing module 130 continues to determine whether the interval calculated by the touch event processing module 130 meets the predetermined interval value (step 352), the interval calculated by the touch event processing module 130 is met. Before the touch event dispatching module 110 receives the touch event, the touch event processing module 130 can meet the predetermined interval value at the calculated interval time as shown in the flow of the "2C chart". The touch track is generated according to the touch event intercepted by the touch event intercepting module 120, such as a mobile behavior event (step 381), and it is determined whether the coverage of the generated touch track in the touch area reaches a predetermined range. The value (step 385), if not, the touch event processing module 130 can call the touch event processing method of the parent category to provide the touch event intercepted by the touch event intercepting module 120 to the parent class. The other touch event processing method is processed (step 387). Thus, the touch event processing method of the parent category can perform the function of the original touch operation according to the touch event received by the touch event processing module 130.

If the touch event processing module 130 determines that the touch track generated by the touch screen reaches a predetermined range of the touch screen of the mobile phone, the touch event processing module 130 can perform the drawing operation according to the generated touch track ( Step 376).

In the above embodiment, when the touch event dispatching module 110 determines that the received touch event is a contact behavior event (step 356), the touch event processing module 130 may start calculating the pressing time until the touch event. When the dispatching module 110 determines that the received touch event is a leaving behavior event, the touch event processing module 130 can determine the calculated pressing time to determine whether the touch operation performed by the user is a long press operation. When the pressing time does not meet the predetermined pressing value, it means that the user does not perform the long pressing operation, and the touch event processing module 130 can cancel the calculation of the pressing time, and if the pressing time meets the predetermined pressing value, the user performs a long pressing operation and touches The control event processing module 130 can execute a processing program corresponding to the long press operation.

In addition, the touch event processing module 130 may further determine whether the range of the touch track conforms to a predetermined range when the pressing time meets the predetermined pressing value, and if the range of the touch track meets the predetermined value, the user performs a drawing operation. If the range of the touch track does not meet the predetermined range, the user performs a long press operation.

In summary, it can be seen that the difference between the present invention and the prior art is that the touch function is executed before the received touch event is an exit behavior event, and when the received touch event is a departure behavior event, And calculating the interval time, and then, before the interval time does not meet the predetermined interval value, when the received touch event is a contact behavior event, intercepting the received touch event until the interval time meets the interval predetermined value When the interval time meets the predetermined interval value, the touch trajectory is generated according to the intercepted touch event, and the technical operation of the drawing operation is performed according to the touch trajectory, thereby solving the prior art self-realization by using a technical means The drawing component does not include the problem of the original touch operation function, and thus achieves the technical effect of improving the practicality of the actual component being inherited.

Furthermore, the method of the present invention for providing a drawing operation in a touch screen can be implemented in a centralized manner in a computer system or in a distributed manner in which different components are interspersed among a number of interconnected computer systems.

While the embodiments of the present invention have been described above, the above description is not intended to limit the scope of the invention. Any modification of the form and details of the practice of the present invention, which is a matter of ordinary skill in the art to which the present invention pertains, is a patent protection of the present invention. range. The scope of the invention is to be determined by the scope of the appended claims.

100‧‧‧Subcategory

110‧‧‧Touch event dispatch module

120‧‧‧Touch event interception module

130‧‧‧Touch event processing module

200‧‧‧Upper components

Step 310‧‧‧ Determine whether the received touch event is a departure behavior event

Step 320‧‧‧Update touch area

Step 332‧‧‧ Calculation interval

Step 336‧‧‧ Intercepting the departure behavior event

Step 341‧‧‧Update touch area

Step 345‧‧‧ A touch event processing method for providing the received touch event to the parent class of the upper layer

Step 352‧‧‧Determination of whether the interval time meets the predetermined interval value

Step 356‧‧‧Determine whether a contact behavior event has been received

Step 361‧‧‧ intercept the received touch event

Step 365‧‧‧ Determine whether the interval time meets the predetermined interval value

Step 372‧‧‧ Generate touch track based on the intercepted touch event

Step 376‧‧‧Drawing operation according to the touch track

Step 381‧‧‧ Generate touch trajectory based on the intercepted touch event

Step 385‧‧‧ Determine whether the coverage of the touch track reaches a predetermined range

Step 387‧‧‧ A touch event processing method that provides intercepted touch events to the parent class of the upper layer

FIG. 1 is a system architecture diagram of a drawing operation provided in a touch screen according to the present invention.

FIG. 2A is a flow chart of a method for providing a drawing operation in a touch screen according to the present invention.

2B and 2C are flow charts of an additional method for performing an original touch operation according to the present invention.

Step 310‧‧‧ Determine whether the received touch event is a departure behavior event

Step 320‧‧‧Update touch area

Step 332‧‧‧ Calculation interval

Step 336‧‧‧ Intercepting the departure behavior event

Step 352‧‧‧Determination of whether the interval time meets the predetermined interval value

Step 356‧‧‧Determine whether a contact behavior event has been received

Step 361‧‧‧ intercept the received touch event

Step 365‧‧‧ Determine whether the interval time meets the predetermined interval value

Step 372‧‧‧ Generate touch track based on the intercepted touch event

Step 376‧‧‧Drawing operation according to the touch track

Claims (10)

A method for providing a drawing operation in a touch screen is applied to a word processing program executed on a mobile device operating system, the method comprising at least the following steps: receiving an editing interface of the word processing program a touch event input; determining that the touch event is an ACTION_UP event, updating a touch area, calculating an interval time, and intercepting the leaving behavior event; Before the interval time does not meet a predetermined interval value, when the received touch event is determined as a contact behavior (ACTION_DOWN) event, the contact behavior event is intercepted, and each subsequent touch event is intercepted until the interval is reached. A touch track is generated according to the intercepted each touch event; and a drawing operation is performed according to the touch track. The method for providing a drawing operation in a touch screen as described in claim 1, wherein the method is further included in the step of calculating the interval time, and if the interval time meets the predetermined value of the interval, if not received The touch event determines the coverage of the touch track, and when the coverage of the touch track reaches a predetermined range, the step of the drawing operation is performed. The method for providing a drawing operation in a touch screen as described in claim 2, wherein the method further comprises providing the intercepted touch when the coverage of the touch track does not reach a predetermined value of the range Event to the upper touch parent class (Class) touch event processing (onTouchEvent) method (method) The steps to perform the positioning operation. The method for providing a drawing operation in a touch screen as described in claim 1, wherein the touch event in the touch screen is updated before the leaving event event, and the receiving area is provided. The step of the touch event processing method to the touch event of the parent class of the upper layer. The method for providing a drawing operation in a touch screen as described in claim 1, wherein the method further comprises: calculating a pressing time when the received touch event is the contact behavior event, and receiving again When another departure behavior event is reached, the pressing time is judged. When the pressing time does not meet a predetermined pressing value, the pressing time is canceled, and when the pressing time conforms to the pressing predetermined value, the long pressing operation is performed. A system for providing a drawing operation in a touch screen is applied to a word processing program, the word processing program is executed on a mobile device operating system, and the system includes at least: a touch event dispatching module for Receiving a plurality of touch events input on the editing interface of the word processing program; a touch event intercepting module for receiving the touch event by the touch event dispatching module as a leaving behavior event Intercepting the departure behavior event, and intercepting the contact behavior event when the touch event received by the touch event dispatching module is a contact behavior event before an interval interval meets a predetermined interval value, and The touch event is received by the touch event processing module, and the touch event received by the module is Update a touch area when leaving the behavior event, and Calculating an interval time, and when the interval time meets the predetermined value of the interval, generating a touch track according to each intercepted touch event, and performing a drawing operation according to the touch track. The system for providing a drawing operation in a touch screen as described in claim 6, wherein the touch event processing module is further configured to: when the interval time meets the predetermined value of the interval, if the touch event is dispatched If the group does not receive the touch event, the coverage of the touch track is determined, and when the coverage of the touch track reaches a predetermined range, the drawing operation is performed. The system for providing a drawing operation in a touch screen as described in claim 6 , wherein the touch event processing module is further configured to provide a time when the coverage of the touch track does not reach a predetermined value of the range Each touch event intercepted performs a positioning operation on the touch event processing method of the parent class of the upper layer. The system for providing a drawing operation in a touch screen as described in claim 6 wherein the touch event processing module is further configured to receive the touch event by the touch event dispatching module as the leaving behavior. Before the event, the touch area is updated, and each touch event received is provided to the touch event processing method of the parent class of the upper layer. The system for providing a drawing operation in a touch screen as described in claim 6 wherein the touch event processing module is further configured to receive the touch event by the touch event dispatching module as another When the behavior event is contacted, a pressing time is calculated, and when the touch event dispatching module receives another leaving behavior event again, the pressing time is determined, and when the pressing time does not meet a predetermined pressing value, the pressing is cancelled. Time, when the pressing time meets the predetermined pressing value, a long press operation is performed.