JP6536666B2 - Drawing control device, control program therefor, and drawing control method - Google Patents

Description

The present invention relates to a drawing control apparatus for generating drawing data arbitrary for a user, a control program therefor, and a drawing control method .

  Conventionally, in an information device capable of inputting handwritten drawing data, such as a tablet-type terminal device, the drawing data displayed on the display unit (view area) serving as an input screen is scaled up / down or scrolled appropriately. It is possible to input desired drawing data.

  In this case, if the drawing data displayed in the display unit (view area) is reduced or scrolled and the drawing area is expanded to input the drawing data, the rectangular data displayed in the expanded area is displayed. A storage capacity equivalent to the drawing area is required.

  In the conventional handwriting input device, in the drawing area displayed in the display unit (view area), a drawing area estimated to be necessary for drawing from new handwriting drawing data is stored in the current drawing area. When it is determined that the drawing data is not displayed, it is considered to secure an area to which the new handwritten drawing data can be input by reducing and rewriting the drawing data itself displayed in the drawing area (for example, Patent Document 1).

JP, 2009-116476, A

  In the conventional handwriting input device, when it is determined from the new handwriting drawing data that the drawing area estimated to be necessary for the drawing does not fit in the current drawing area, the drawing displayed in the drawing area By reducing and rewriting the data itself, it is not necessary to expand the drawing area, and it is possible to secure an area to which the new handwritten data can be input and to suppress an increase in the storage capacity thereof.

  However, if the drawing data itself is reduced without expanding the drawing area, the display size of the drawing data becomes small and it becomes difficult to see, of course, the resolution decreases and the visibility also deteriorates.

The present invention has been made in view of such problems, it is not necessary to store all of the drawing area which is expanded by the reduction of the display, it is possible to suppress the storage capacity for the drawing area draw It is an object of the present invention to provide a control device, its control program, and a drawing control method .

The drawing control device according to the present invention stores the scale of the display with respect to the view area of the display unit, and stores the scale of the view area according to the scale stored in the scale storage means every time the display of the view area is enlarged or reduced. Layer temporary generation means for temporarily generating a new drawing input layer having only a drawing data writing area corresponding to the coordinate range of the view area, and drawing data drawn in the view area by the layer temporary generation means And a layer actual data generation unit that generates a drawing input layer in which the drawing data has been written as a normal layer.

  According to the present invention, it is not necessary to save all of the drawing area expanded by the reduction of the display, and it becomes possible to suppress the storage capacity for the drawing area.

The block diagram showing the composition of the electronic circuit of the tablet terminal 10 concerning the embodiment of the drawing device of the present invention. When drawing data displayed on the touch panel display unit 13 of the tablet terminal 10 is enlarged, reduced, or scrolled, an input area of drawing data generated according to the size change of the view area Va (Drawing input layer) The figure which shows the relationship between L, Lm, Lr, Ls, and each said layer L, Lm, Lr, Ls. The drawing data w1, w2, etc. are sequentially displayed on the drawing input layers L, Lm, Lr, Ls while the drawing data displayed on the touch panel display unit 13 of the tablet terminal 10 is enlarged, reduced, or scrolled. The figure which shows the relationship between each said drawing data w1, w2, w3, w4 at the time of writing w3 and w4, and view area Va (1x display, 2x expansion display, 1/2 reduction display, 1x scroll display). FIG. 6 is a diagram showing a storage format of each of the drawing input layers Ln... Stored in a layer actual data storage unit 15 d of the tablet terminal 10. FIG. 6 is a view showing the contents of layer management data stored in a layer management data storage unit 15e of the tablet terminal 10. 6 is a flowchart showing layer generation processing of the tablet terminal 10; 6 is a flowchart showing display generation processing of the tablet terminal 10; FIG. 7 is a diagram showing the display state of the view area Va corresponding to the user operation of the first embodiment accompanying the layer generation processing of the tablet terminal 10 and the generation state of the drawing input layer Ln in association with each other. FIG. 7 is a diagram showing the display state of the view area Va corresponding to the user operation of the second embodiment accompanying the layer generation processing of the tablet terminal 10 and the generation state of the drawing input layer Ln in association with each other.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of the electronic circuit of the tablet terminal 10 according to the embodiment of the drawing device of the present invention.

  The drawing device is configured as the tablet terminal 10 described below, or configured as a touch panel type mobile phone, a portable game machine, or the like.

  The tablet terminal 10 includes a CPU 11 which is a microcomputer, a key input unit 12 having a power key, and a touch panel display unit 13 formed by overlapping a transparent touch panel 13 t on a color liquid crystal display screen 13 d.

  The CPU 11 is a terminal control program 14 a stored in advance in a storage device 14 such as a flash ROM, or a terminal control program read from the external storage medium 17 such as a memory card into the storage device 14 via the storage medium reading unit 16. In accordance with the terminal control program 14a downloaded to the storage device 14 from the Web server (program server) on the communication network 14a or a communication network (Internet), the operation of each part of the circuit is performed using the RAM 15 as a working memory. It controls and executes various functions provided in the present tablet terminal 10, such as an input function of handwriting drawing data and a display function of drawing data.

  The key input unit 12, the touch panel display unit 13, the storage device 14, the RAM 15, the recording medium reading unit 16, the communication control unit 18, etc. are connected to the CPU 11.

  The RAM 15 stores various data necessary for the processing operation of the CPU 11. The RAM 15 stores a display data storage unit 15a where data to be displayed in color on the screen of the touch panel display unit 13 is expanded, and coordinate data of a touch position according to a user operation detected by the touch panel display unit 13 In addition to the touch coordinate data storage unit 15b, the scale management data storage unit 15c, the layer actual data storage unit 15d, the layer management data storage unit 15e, and the like are secured.

  FIG. 2 is a drawing generated according to the size change of the view area Va when the drawing data displayed on the touch panel display unit 13 of the tablet terminal 10 is enlarged, reduced or scrolled. It is a figure which shows the relationship between the input area (drawing input layer) L, Lm, Lr, Ls of data, and each said layer L, Lm, Lr, Ls.

  FIG. 3 sequentially displays drawing data on each of the drawing input layers L, Lm, Lr, and Ls while enlarging, reducing, or scrolling the drawing data displayed on the touch panel display unit 13 of the tablet terminal 10. Relationship between the respective drawing data w1, w2, w3, w4 when w1, w2, w3, w4 are written and the view area Va (1x display, 2x enlarged display, 1/2 reduced display, 1x scroll display) FIG.

  Each of the drawing input layers L, Lm, Lr and Ls corresponds to a drawing memory for writing drawing data inputted in the view area Va of the touch panel display unit 13.

  In the drawing input layer L [x1] generated along with the initial display (view area Va (1 × display)) of the touch panel display unit 13, for example, the drawing data in the upper left of the drawing input layer L [x1] is targeted When pinched out to 2 × magnified display (zoom in), a new drawing input layer Lm [x1 / 4] is generated in accordance with the zoomed-in view area Va.

  In addition, when the drawing data in the drawing input layer L [x1] of 1 × display is pinched in for 1/2 reduction display (zoom out), new drawing input is performed according to the zoomed out view area Va. Layer Lr [x4] is generated.

  In addition, when flicking left and drawing the drawing data in the drawing input layer L [x1] of the 1 × display, a new drawing input layer Ls [x1 is aligned with the view area Va scrolled to the right. ] Is generated.

  Each of the drawing input layers L, Lm, Lr, and Ls are generated as temporary layers when the initial display, enlarged display, reduced display, and scroll display are performed, respectively, and drawing data w1, w2, w3, and so on with user operation. When w4 is written, the layer Ln in which the drawing data wn is written is stored in the layer real data storage unit 15d as real data.

  FIG. 4 is a diagram showing a storage format of each of the drawing input layers Ln... Stored in the layer actual data storage unit 15 d of the tablet terminal 10.

  Each drawing input layer Ln (L, Lm, Lr, Ls) stored in the layer actual data storage unit 15d has its layer ID and absolute coordinates (x, y) (xm, ym) (xr) as its starting point. , Yr) (x1, y1), vertical and horizontal sizes (X, Y) (Xm, Ym) (Xr, Yr), scale p, and other management information are stored in association with the headers Hn.

  That is, as shown in FIG. 3A, when the drawing data w1 of “o” is written to the drawing input layer L [x1] temporarily generated along with the initial display (view area Va (1 × display)), The drawing input layer L [x1] is stored in the layer actual data storage unit 15d in association with the layer ID, the starting point absolute coordinates (x, y), the vertical and horizontal sizes (X, Y), and the scale (1). Ru.

  Next, as shown in FIG. 3B, when the upper left of the initial display (view area Va (1 × display)) is pinched out to make a 2 × magnified display (zoom in), a new drawing input layer is displayed. Lm [x1 / 4] is temporarily generated, and in the view area Va, a part of the upper left of the drawing data w1 of “o” written in the drawing input layer L [x1] has the absolute point coordinates (x, Displayed in a superimposed state based on y). Then, when the drawing data w2 of “x” is written to the drawing input area Lm [x1 / 4] temporarily generated in accordance with the view area Va of the 2 × magnified display, the drawing input layer Lm [x1 / 4] Is stored in the layer actual data storage unit 15d in association with the layer ID, the starting point absolute coordinates (xm, ym), the vertical and horizontal sizes (Xm, Ym), and the scale (double).

  Next, as shown in FIG. 3C, when the view area Va of the 2 × enlargement display is pinched in to be 1⁄2 reduction display (zoom out), a new drawing input layer Lr [x4] is displayed. The drawing data w1 of “o” temporarily generated and written in the drawing input layer L [x1] of the 1 × display in the view area Va and the drawing input area Lm of the 2 × enlargement display are The drawing data w2 of “x” written in are displayed in a state of being superimposed based on their respective starting point absolute coordinates (x, y) and (xm, ym). Then, when the drawing data w3 of “」 ”is written to the drawing input area Lr [x4] temporarily generated in accordance with the 1⁄2 reduced display area Va, the drawing input layer Lr [x4] is The layer actual data storage unit 15d stores the layer ID, the absolute point of origin (xr, yr), the vertical and horizontal sizes (Xr, Yr), and the scale (1/2) in association with each other.

  Next, as shown in FIG. 3D, pinch out the upper left of the view area Va of the 1/2 reduction display to return to the original 1 × display corresponding to the drawing input layer L [x1]. After that, flicking to the left to scroll to the right, a new drawing input layer Ls [x1] is temporarily generated, and in the view area Va, the drawing input layer Lr [x4] of the 1⁄2 reduction display is generated. A part of the upper right of the drawing data w3 of “Δ” written in is displayed in a superimposed state based on the absolute point coordinates (xr, yr) and (x1, y1). Then, when the drawing data w4 of “...” is written to the drawing input area Ls [x1] temporarily generated in accordance with the view area Va of the scroll display, the drawing input layer Ls [x1] has its layer ID, The absolute point coordinates (x1, y1), vertical and horizontal sizes (X, Y), and scale (1 ×) are associated with each other and stored in the layer actual data storage unit 15 d.

  The current scale to be displayed corresponding to the view area Va of the touch panel display unit 13 is stored in the scale management data storage unit 15c. For example, the 1 × display shown in FIG. In the state of [1/1], in the state of 2 × display shown in FIG. 3B, the scale [2/1], in the state of 1⁄2 reduction display shown in FIG. / 2] is stored.

  FIG. 5 is a diagram showing the contents of layer management data stored in the layer management data storage unit 15 e of the tablet terminal 10.

  In the layer management data storage unit 15e, the link information of each of the drawing input layers Ln... Stored in the layer actual data storage unit 15d is stored by the association of the corresponding layer IDs. Among Ln, for example, the layer L2 having a large coordinate area (X2, Y2) including the coordinate area (X1, Y1) of a certain layer L1 is the parent layer of the upper layer, the coordinate area (X2, X2 of this parent layer (L2) The layer L1 of the small coordinate area (X1, Y1) included in Y2) is related as a lower child layer.

  For example, in the case of each drawing input layer L, Lm, Lr, Ls shown in FIG. 2 and FIG. 3, the parent layer of the top layer is the layer Lr [x4] having the largest coordinate area (Xr, Yr) overlapping each other. Then, the layer L [x1] → the layer Lm [x1 / 4] are sequentially associated as lower child layers. The layer Ls [x1] is associated with the layer L [x1] as a peer child layer.

  Each layer ID stored in the layer management data storage unit 15e functions as link information to each corresponding actual data stored in the layer actual data storage unit 15d.

  In the tablet terminal 10 configured as described above, the CPU 11 controls the operation of each part of the circuit in accordance with the instructions of the various processes described in the terminal control program 14a, and the software and the hardware operate in cooperation with each other. Thus, the various functions described in the following operation description are realized.

  Next, the operation of the tablet terminal 10 configured as described above will be described.

(Layer generation process)
FIG. 6 is a flowchart showing the layer generation process of the tablet terminal 10.

  According to the terminal control program 14a, when an application for writing and displaying drawing data in the view area Va of the touch panel display unit 13 according to a user operation is activated, in the case of initial display, according to the view area Va The drawing input layer L [x1] of 1 × display is temporarily generated and displayed, and when there is the drawing input layer Ln displayed last time, the drawing input layer Ln is displayed at the scale (step M1).

  Then, a generation standby state for an input event corresponding to the user operation is established (step M2).

  Here, when it is determined that there is a pinch operation (step P0), the scale in the view area Va before the pinch operation is compared with the scale after the pinch operation, and a sufficient scale change larger than a preset change amount It is determined whether or not there is (step P1).

  For example, in the case of enlarging the drawing data according to the pinch-out operation, the scale change is 1 to 1.1 times the scale change more than the preset change amount, and the drawing data according to the pinch-in operation in reverse. When reducing the scale, the scale changes by 1 to 0.9 times and by 0.1 or more, and less than 0.1 prevents the process from becoming insensitive.

  When it is determined that the change in scale due to the pinch operation is equal to or more than the change amount set in advance (step P1 (YES)), a new drawing input layer Ln of a size corresponding to the change in scale is temporarily generated ( Step P2) The drawing data in the original drawing input layer L [x1] is enlarged or reduced and displayed (step P3).

  Then, the process waits for occurrence of an input event according to the user operation (step M3 → M2).

  Further, when it is determined that a flick operation has been performed in the generation standby state (step M2) according to the user operation (step M2), the drawing input layer L [corresponding to the view area Va before the flick operation] The coordinate range of x1] is compared with the scrolled coordinate range of the view area Va according to the flick operation, and it is determined whether there is movement outside the preset coordinate range (step F1).

  The movement to the outside of the preset coordinate range may be, for example, the coordinate range after scrolling according to the flick operation with respect to the coordinate range of the drawing input layer L [x1] corresponding to the view area Va before the flick operation. Assuming that the overlap is less than 60% and moves out of the range of 40% or more, the movement of less than 40% is insensitive and prevents the processing from being complicated.

  Then, when it is determined that the flick operation causes movement of the view area Va out of the preset coordinate range (step F1 (YES)), a new drawing input layer Ln corresponding to the coordinate range after the movement is made. Is temporarily generated (step F2), and the drawing data in the original drawing input layer L [x1] is scrolled and displayed (step F3).

  When it is determined that a drawing operation has been made in the generation standby state (step M2) according to the user operation (step M2), the drawing input layer Ln corresponding to the current view area Va is the temporary It is determined whether or not it is a generated new layer (step D1).

  Here, if it is determined that the drawing input layer Ln corresponding to the current view area Va is the temporarily generated new layer (step D1 (YES)), the new layer is regarded as a normal drawing input layer The drawing data corresponding to the drawing operation is written as Ln, and a new drawing input layer Ln in which the drawing data is written is stored in the layer actual data storage unit 15d. Then, link information corresponding to the new drawing input layer Ln is stored in the layer management data storage unit 15e (see FIG. 5) (step D2).

  Then, the drawing data written in the drawing input layer Ln is drawn and displayed at the corresponding coordinate position of the view area Va (step D3).

  If it is determined in step D1 that the drawing input layer Ln corresponding to the current view area Va is not the temporarily generated new layer but the drawing input layer Ln that has already been displayed ( Step D1 (NO), drawing data corresponding to the drawing operation is written to the drawing input layer Ln, and the written drawing data is drawn and displayed at the corresponding coordinate position of the view area Va (step D3).

  In this manner, each time the drawing data displayed in the view area Va is enlarged, reduced, or scrolled, it corresponds to the coordinate range of the view area Va after the enlargement, reduction, or scrolling. Only when the drawing input layer Ln is temporarily generated and new drawing data is written, the temporarily generated drawing input layer Ln is stored as actual data.

(Display generation process)
FIG. 7 is a flowchart showing a display generation process of the tablet terminal 10.

  When an application for displaying the drawing data of each drawing input layer Ln... Stored in the layer actual data storage unit 15d in the view area Va of the touch panel display unit 13 is started according to the terminal control program 14a First, the scale p corresponding to the current view area Va of the touch panel display unit 13 stored in the scale management data storage unit 15c is acquired (step V1).

  The drawing input layer Ln including the coordinate range of the view area Va corresponding to the current scale p is stored in the layer management information stored in the layer management data storage unit 15e and in the layer actual data storage unit 15d. Based on the actual data of the layer Ln, it is searched as the top parent layer (step V2).

  Then, the header information and drawing information of the drawing input layer Ln retrieved as the parent layer are read out from the layer actual data storage unit 15d (step V3), and the drawing information according to the header information is displayed on the touch panel display unit 13. It is displayed (step V4).

  Then, based on the layer management information stored in the layer management data storage unit 15e, it is determined whether there is a child layer linked to the drawing input layer Ln displayed as the parent layer (step V5).

  Here, when it is determined that there is a child layer linked to the rendering input layer Ln displayed as the parent layer (step V5 (YES)), the layer ID corresponding to the layer ID determined as the child layer is selected. The header information and drawing information of the drawing input layer Ln stored in the layer actual data storage unit 15d are acquired (step V6).

  Then, for the drawing input layer Ln having the layer ID determined as the child layer, the coordinate area included in the coordinate range of the current view area Va in the range from the current scale p to +1 (range where the scale is larger by one step) It is judged whether it is the drawing input layer Ln which it has (step V7).

  The drawing input layer Ln determined as the child layer is determined to be the drawing input layer Ln having a coordinate area included in the coordinate range of the current view area Va within the range of the current scale p to +1. And (step V7 (YES)), the drawing information of the drawing input layer Ln is read out and displayed superimposed on the drawing information displayed as the parent layer on the touch panel display unit 13 (step V8).

  Then, it is determined whether the next layer (including the peer layer and the child layer) further linked is present in the drawing input layer Ln of the child layer displayed superimposed on the parent layer (step V9), If it is determined that there is a next layer linked to the displayed child layer (step V9 (YES)), the header information and drawing information of the drawing input layer Ln which is the next layer is the actual layer data It is acquired from the storage unit 15d (step V10).

  Then, for the drawing input layer Ln acquired as the next layer, there is a coordinate area included in the coordinate range of the current view area Va in the range from the current scale p to +1 (the range where the scale is larger by one step) It is judged whether or not it is the drawing input layer Ln (step V7), and if it is judged that it is (step V7 (YES)), the drawing information of the drawing input layer Ln is transmitted to the touch panel display unit 13 It is further superimposed and displayed on each drawing information currently displayed as a parent layer and a child layer (step V8).

  Thereafter, the processes of steps V9 and V10 → V7 and V8 are repeated in the same manner as described above, according to the link information of the respective drawing input layers Ln... Stored in the layer management data storage unit 15e. The header information and the drawing information of each drawing input area Ln from the highest parent layer to the child layer included in the coordinate range of the corresponding view area Va are sequentially acquired, and the respective drawing information is the touch panel display unit according to the header information. It is superimposed on 13 and displayed.

(First embodiment)
FIG. 8 is a diagram showing the display state of the view area Va corresponding to the user operation of the first embodiment accompanying the layer generation processing of the tablet terminal 10 and the generation state of the drawing input layer Ln in association with each other.

  When drawing data w1 is handwritten in a state in which drawing input layer L [x1] temporarily generated along with the initial display is displayed in view area Va of touch panel display unit 13 (step D0) The drawing input layer L [x1] in which the drawing data w1 is written is stored in the layer actual data storage unit 15d as a normal layer, and the layer ID of the layer L [x1] in the layer management data storage unit 15e is It is stored (steps D1 and D2), and the drawing data w1 is displayed in the view area Va (step D3).

  Here, when the center of the view area Va where the drawing data w1 is displayed is pinched out and magnified twice (step P0), a new drawing input corresponding to the coordinate range of the view area Va after drawing enlargement is performed. A layer Lm1 [x1 / 4] is temporarily generated (steps P1 and P2), and enlarged drawing data w1 of the first drawing input layer L [x1] is displayed in the view area Va (step P3).

  Here, when the drawing data w2 is handwritten (step D0), the drawing data w2 is written to the temporarily generated drawing input layer Lm1 [x1 / 4] and is stored in the layer actual data storage unit 15d. In the layer management data storage unit 15e, link information having the layer Lm1 [x1 / 4] as a child layer and the first drawing input layer L [x1] as a parent layer is generated (steps D1 and D2). Then, the drawing data w2 written to the current drawing input layer Lm1 [x1 / 4] superimposed on the enlarged drawing data w1 of the first drawing input layer L [x1] is displayed in the view area Va ( Step D3).

  Here, if the lower part of the center of the view area Va in which the drawing data w1 and w2 are displayed is pinched out and magnified twice (step P0), it corresponds to the coordinate range of the view area Va after drawing enlargement. New drawing input layer Lm2 [x1 / 16] is temporarily generated (steps P1 and P2), and the further enlarged drawing data w1 of the first drawing input layer L [x1] and the next drawing input layer Lm1 [ The enlarged drawing data w2 of x1 / 4] is displayed superimposed on the view area Va (step P3).

  Here, when the drawing data w3 is handwritten (step D0), the drawing data w3 is written to the temporarily generated current drawing input layer Lm2 [x1 / 16] and stored in the layer actual data storage unit 15d. In addition, in the layer management data storage unit 15e, link information in which the layer Lm2 [x1 / 16] is further made a child layer is generated (steps D1 and D2). Then, the first drawing input layer L [x1] four times enlarged drawing data w1 and the next drawing input layer Lm1 [x1 / 4] two times enlarged drawing data w1 superimposed The drawing data w3 written to the drawing input layer Lm2 [x1 / 16] is displayed in the view area Va (step D3).

Thereafter, when the view area Va is pinched in and reduced to 1/4 and returned to the initial scale (step P0), the coordinate range of the view area Va of the 1 × display returned to the initial scale is obtained. A corresponding new drawing input layer L [x1] is temporarily generated (steps P1 and P2), but if the new drawing data wn is not written into the temporarily generated drawing input layer L [x1] The layer actual data storage unit 15d is not stored as a normal layer. Then, for the view area Va of the coordinate range corresponding to the first drawing input layer L [x1], the drawing data w1 of the first drawing input layer L [x1] and the next drawing input layer Lm1 [x1 / 4] ] And the next drawing data w3 of the drawing input layer Lm2 [x1 / 16] are displayed overlappingly (step P3).
In the first embodiment, the creation of a new drawing input layer Ln corresponding to the coordinate range of the view area Va when enlargement or reduction larger than a preset change amount is performed has been described.

Second Embodiment
FIG. 9 is a diagram showing the display state of the view area Va corresponding to the user operation of the second embodiment accompanying the layer generation processing of the tablet terminal 10 and the generation state of the drawing input layer Ln in association with each other.

  When drawing data w1 is handwritten in a state in which drawing input layer L [x1] temporarily generated along with the initial display is displayed in view area Va of touch panel display unit 13 (step D0) The drawing input layer L [x1] in which the drawing data w1 is written is stored in the layer actual data storage unit 15d as a normal layer, and the layer ID of the layer L [x1] in the layer management data storage unit 15e is It is stored (steps D1 and D2), and the drawing data w1 is displayed in the view area Va (step D3).

  Here, when the area between the upper left of the view area Va and the vicinity of the center where the drawing data w1 is displayed is pinched in and reduced to 1⁄2 (step P0), the first drawing input layer L [x1] A new drawing input layer Lr [x4] corresponding to the coordinate range of the view area Va after drawing reduction with reference to the upper left coordinate (x, y) is temporarily generated (steps P1 and P2), and the first drawing input The reduced drawing data w1 of the layer L [x1] is displayed in the view area Va (step P3).

  Here, when the drawing data w2 is handwritten (step D0), the drawing data w2 is written to the temporarily generated drawing input layer Lr [x4] and is stored in the layer actual data storage unit 15d, and layer management In the data storage unit 15e, link information having the layer Lr [x4] as a parent layer and the first drawing input layer L [x1] as a child layer is generated (steps D1 and D2). Then, the drawing data w2 written to the current drawing input layer Lr [x4] superimposed on the reduced drawing data w1 of the first drawing input layer L [x1] is displayed in the view area Va (step D3) ).

  Here, when the operation of pinching out the upper left portion where the drawing data w1 of the view area Va is displayed and enlarging it by 2 times to return to the initial scale is performed (step P0), the upper left coordinates (x, Although a new drawing input layer L [x1] corresponding to the coordinate range of the view area Va of 1 × display returned to the first scale based on y) is temporarily generated (steps P1 and P2), the temporary The generated drawing input layer L [x1] is not stored in the layer actual data storage unit 15d as a normal layer unless new drawing data wn is written therein. Then, with respect to the view area Va of the coordinate range corresponding to the first drawing input layer L [x1], the drawing data w1 of the first drawing input layer L [x1] and the next drawing input layer Lr [x4] The drawing data (here, none) in the coordinate range corresponding to the view area Va is superimposed and displayed (step P3).

  Here, when flicking the view area Va in which the drawing data w1 is displayed at the first scale from the right to the left (step F0), the upper left coordinates (x, y) which is the reference are in accordance with the flicking operation. A new drawing input layer Ls [x1] corresponding to the coordinate range of the view area Va after scrolling moved to a new coordinate (x1, y1) which is the upper right coordinate of the drawing input layer L [x1] is temporarily generated (Steps F1 and F2). Then, the drawing data w2 written to the drawing input layer Lr [x4] corresponding to the scrolled view area Va is displayed (step F3).

  Here, when the drawing data w3 is handwritten (step D0), the drawing data w3 is written to the temporarily generated drawing input layer Ls [x1] and stored as the normal layer in the layer actual data storage unit 15d. In addition, the layer management data storage unit 15e is linked to the drawing input layer Lr [x4] as a parent layer and the drawing input layer Ls [x1] as a child layer of the first drawing input layer L [x1] Are generated (steps D1, D2). Then, the drawing data w3 written in the current drawing input layer Ls [x1] is superimposed on the drawing data w2 written in the drawing input layer Lr [x4] corresponding to the scrolled view area Va. It is displayed (step D3).

Here, when the area between the lower left and upper right of the view area Va is pinched in to the upper right and the drawing data w2, w3 are reduced by half (step P0), a new coordinate corresponding to the coordinate range after drawing reduction is generated. Although the drawing input layer Lr [x4] is temporarily generated (steps P1 and P2), the temporarily generated drawing input layer Lr [x1] is a normal layer if new drawing data wn is not written therein. The layer actual data storage unit 15 d is not stored as Then, the view area Va of the coordinate range after the drawing reduction is superimposed on the drawing data w2 of the drawing input layer Lr [x4] which is the parent layer, and the first drawing input layer L [x1 which is a child layer thereof. ] And the drawing data w3 of the drawing input layer Ls [x1] are displayed (step P3).
In the second embodiment, when reduction, enlargement, or movement is performed with a preset amount of change or more based on the upper left coordinates of the view area Va, a new drawing input is made based on the coordinate range of the layer that already exists. The specific example of creating the layer Ln has been described.

  Therefore, according to the generation function of the drawing input layer Ln ... of the tablet terminal 10 configured as described above, the drawing data displayed on the touch panel display unit 13 is displayed each time it is displayed by enlarging, reducing or scrolling. After enlargement and drawing reduction, a drawing input layer Ln corresponding to the coordinate range of the view area Va after drawing scroll and a drawing input layer Ln based on the coordinate range of an already existing layer are temporarily generated. Then, when the new drawing data wn is handwritten, the drawing data wn is written to the temporarily generated drawing input layer Ln, and is stored in the layer actual data storage unit 15 d as a normal layer. In the view area Va of the touch panel display unit 13, each drawing data written in each drawing input layer Ln... Stored in the layer actual data storage unit 15d corresponding to the current scale and its coordinate range wn ... is displayed overlapping.

  For this reason, it is not necessary to save all of the drawing area expanded by the reduction or scrolling of the display, and it becomes possible to suppress the storage capacity for the drawing area.

  Further, according to the generation function of the drawing input layers Ln ... of the tablet terminal 10 configured as described above, each drawing input layer Ln ... stored in the layer actual data storage unit 15d has a coordinate range of another drawing input layer Ln. The drawing input layer Ln having a wide coordinate range to be included is stored as the parent layer in the layer management data storage unit 15e as a child layer, and the drawing input layer Ln including the coordinate range included in the coordinate range of the parent layer is stored as layer Based on the layer management data, each drawing data wn... Written in each drawing input layer Ln... Corresponding to the coordinate range of the view area Va can be quickly read out and displayed.

In each of the above-described embodiments, a temporary layer is generated when a sufficient scale change or movement equal to or greater than a preset change amount is detected, and a configuration is used in which drawing data is stored as an actual layer. However, the present invention is not limited to this, and an actual layer may be generated and stored when a sufficient change in scale or movement equal to or more than a previously set change amount is detected.
In addition, the method of each process by the tablet terminal 10 described in each embodiment, that is, each method such as the layer generation process shown in the flow chart of FIG. 6 and the display generation process shown in the flow chart of FIG. As a program that can be executed, a medium of an external recording device such as a memory card (ROM card, RAM card, etc.), a magnetic disk (floppy disk, hard disk, etc.), an optical disk (CD-ROM, DVD, etc.), semiconductor memory, etc. (17) Can be stored and distributed in Then, the computer (11) of the electronic device provided with the touch panel display unit (13) reads the program stored in the medium (17) of the external storage device into the storage device (14), and the operation is performed by the read program. By being controlled, the generation function of the drawing input layers Ln,... Described in each of the above embodiments can be realized, and similar processing by the above-described method can be executed.

  Further, data of a program for realizing the respective methods can be transmitted on a communication network as a form of program code, and the data of the program can be touch panel from a computer device (program server) connected to the communication network. The generation function of the drawing input layers Ln,... Can also be realized by being taken into an electronic device provided with the display unit (13) and stored in the storage device (14).

  The present invention is not limited to the above-described embodiments, and can be variously modified at the implementation stage without departing from the scope of the invention. Furthermore, the above embodiments include inventions of various stages, and various inventions can be extracted by appropriate combinations of a plurality of disclosed configuration requirements. For example, even if some of the configuration requirements are removed from all the configuration requirements shown in each embodiment or some configuration requirements are combined in different forms, the problems described in the section of the problem to be solved by the invention In the case where the problem described in the column of “effects of the invention” is obtained, a configuration in which the constituent requirements are eliminated or combined can be extracted as the invention.

  In the following, the invention described in the original claims of the present application is appended.

[1]
A display unit,
Scale storage means for storing the scale of the display relative to the view area of the display;
Each time the display of the view area is enlarged or reduced, a layer provisionally generates a drawing input layer having a drawing data writing area having a drawing data writing area corresponding to the coordinate range of the view area according to the scale stored by the scale storage means. Generation means,
Layer actual data that writes drawing data drawn according to a user operation on the view area into the drawing input layer temporarily generated by the layer temporary generation means, and stores the drawing input layer in which the drawing data is written as a normal layer Storage means,
And display control means for reading out drawing data written in the drawing input layer having a coordinate range corresponding to the coordinate range of the view area among the drawing input layers stored by the layer actual data storage means and displaying the same in the view area ,
A drawing apparatus characterized by comprising:

[2]
For each drawing input layer stored by the layer actual data storage means, a drawing input layer having a coordinate range including the coordinate range of the drawing input layer is included in the parent layer, and the coordinate range of the drawing input layer which is the parent layer Layer management means for managing a drawing input layer having a coordinate range to be processed as a child layer,
The display control means draws a parent layer having a coordinate range corresponding to the coordinate range of the view area among the drawing input layers stored by the layer actual data storage means based on the management information by the layer management means From the drawing data written to the input layer, the drawing data written to the drawing input layer of the child layer is sequentially read and displayed superimposed on the view area.
The drawing apparatus according to [1], characterized in that

[3]
The display unit is a touch panel display unit,
The enlargement or reduction of the display of the view area is performed by the user's pinch-out or pinch-in operation on the touch panel, and the drawing data is drawing data drawn according to the handwriting operation on the touch panel of the view area. is there,
The drawing apparatus according to [1] or [2], characterized in that

[4]
A display unit,
Scale storage means for storing the scale of the display relative to the view area of the display;
Layer generation means for generating a drawing input layer having a drawing data writing area corresponding to the coordinate range of the view area corresponding to the scale stored by the scale storage means each time the display of the view area is enlarged or reduced When,
Display control means for reading out and displaying in the view area the drawing data written in the drawing input layer having a coordinate range corresponding to the coordinate range of the view area among the drawing input layers generated by the layer generation means;
A drawing apparatus characterized by comprising:

[5]
A program for controlling a computer of an electronic device having a display unit, the program comprising:
The computer,
Scale storage means for storing scale of display for the view area of the display unit in the scale storage unit;
Each time the display of the view area is enlarged or reduced, a layer provisionally generates a drawing input layer having a drawing data writing area having a drawing data writing area corresponding to the coordinate range of the view area according to the scale stored in the scale storage unit. Generation means,
The drawing data drawn according to the user operation on the view area is written in the drawing input layer temporarily generated by the layer temporary generation means, and the drawing input layer in which the drawing data is written is regarded as a normal layer and the layer actual data storage unit Layer actual data storage means to be stored in
Display control means for reading out and displaying in the view area the drawing data written in the drawing input layer having a coordinate range corresponding to the coordinate range of the view area among the drawing input layers stored in the layer actual data storage unit,
Computer readable program to function as.

[6]
A method for controlling a computer of an electronic device having a display unit, the method comprising:
Storing a scale of display for the view area of the display unit;
Every time the display of the view area is enlarged or reduced, a drawing input layer having a drawing data writing area corresponding to the coordinate range of the view area corresponding to the stored scale is temporarily generated,
The drawing data drawn according to the user operation on the view area is written in the temporarily generated drawing input layer, and the drawing input layer in which the drawing data is written is stored as a normal layer,
Among the stored drawing input layers, drawing data written in the drawing input layer having a coordinate range corresponding to the coordinate range of the view area is read out and displayed in the view area.
A drawing method characterized by

[7]
A program for controlling a computer of an electronic device having a display unit, the program comprising:
The computer,
Scale storage means for storing the scale of the display with respect to the view area of the display unit, Each time the display of the view area is enlarged or reduced, the coordinate range of the view area corresponding to the scale stored by the scale storage means Layer generation means for generating a drawing input layer having a writing area of the drawn drawing data;
Display control means for reading out drawing data written in a drawing input layer having a coordinate range corresponding to the coordinate range of the view area among the drawing input layers generated by the layer generation means, and displaying the same on the view area
Computer readable program to function as.

[8]
A method for controlling a computer of an electronic device having a display unit, the method comprising:
Storing a scale of display for the view area of the display unit;
Every time the display of the view area is enlarged or reduced, a drawing input layer having a drawing data writing area corresponding to the coordinate range of the view area according to the stored scale is generated.
Among the generated drawing input layers, drawing data written in the drawing input layer having a coordinate range corresponding to the coordinate range of the view area is read out and displayed in the view area.
A drawing method characterized by

10 ... Tablet terminal (drawing device)
11 ... CPU
13 ... Touch panel display unit 14 ... Storage device 14 a ... Terminal control program 15 ... RAM
15a: display data storage unit 15b: touch coordinate data storage unit 15c: scale management data storage unit 15d: layer actual data storage unit 15e: layer management data storage unit 16: recording medium reading unit 17: external recording medium 18: communication control unit Va ... View area Ln ... Drawing input layer wn ... Drawing data

Claims (8)

Scale storage means for storing the scale of the display relative to the view area of the display;
Every time the display of the view area is enlarged or reduced, a new drawing input layer having only a drawing data writing area corresponding to the coordinate range of the view area corresponding to the scale stored in the scale storage means is temporarily generated. Layer temporary generation means,
Layer actual data generation means for writing the drawing data drawn in the view area into the drawing input layer temporarily generated by the layer temporary generation means, and generating the drawing input layer in which the drawing data is written as a normal layer;
And a drawing control device characterized by comprising: It further comprises: layer actual data storage means for storing each drawing input layer generated by the layer actual data generation means;
The drawing control apparatus according to claim 1, In each drawing input layer stored by the layer actual data storage means,
A drawing input layer having a coordinate range including the coordinate range of another drawing input layer is used as a parent layer, and a drawing input layer having a coordinate range included in the coordinate range of the drawing input layer that is the parent layer is managed as a child layer With layer management means,
The drawing control apparatus according to claim 2, characterized in that: The display unit has a touch panel,
The enlargement or reduction of the display of the view area is performed by the user's pinch out or pinch in operation on the touch panel.
The drawing data is drawing data drawn according to a user's operation on a touch panel of the view area.
The drawing control apparatus according to any one of claims 1 to 3, characterized in that: A determination unit that determines whether a change amount of enlargement or reduction of the display of the view area is equal to or more than a predetermined threshold value;
The layer temporary generation means is a coordinate range of the view area according to the scale stored in the scale storage means when the determination means determines that the change amount of the enlargement or reduction is a predetermined threshold or more. Temporarily generate a drawing input layer having a drawing data writing area corresponding to
The drawing control device according to any one of claims 1 to 4, characterized in that: When the coordinate range of the enlarged or reduced view area has moved, the layer temporary generation means may write the drawing data writing area corresponding to the coordinate range of the view area according to the scale stored in the scale storage means. Temporarily generate the drawing input layer that it has,
6. The drawing control apparatus according to claim 5, wherein A program for controlling a computer,
The computer,
Scale storage means for storing the scale of the display with respect to the view area of the display unit,
Every time the display of the view area is enlarged or reduced, a new drawing input layer having only a drawing data writing area corresponding to the coordinate range of the view area corresponding to the scale stored in the scale storage means is temporarily generated. Layer temporary generation means,
Layer actual data generation means for writing the drawing data drawn in the view area into the drawing input layer temporarily generated by the layer temporary generation means, and generating the drawing input layer in which the drawing data is written as a normal layer;
Computer readable program to function as. A method for controlling a computer,
Storing the scale of the display relative to the view area of the display;
Each time to enlarge or reduce the display of the view area, the layer tentative generated to newly tentatively generate drawing input layer having a write only area of the drawing data corresponding to the coordinate range of the view area in accordance with the stored scale Step and
A layer actual data generation step of writing the drawing data drawn in the view area into the temporarily generated drawing input layer, and generating the drawing input layer in which the drawing data is written as a normal layer;
A drawing control method characterized by including.